PSCS Wiki

Misc -> Advanced Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Misc -> Advanced Tab Settings -> Misc Settings -> Advanced You will normally not need to change any settings on this page unless VPOP3 technical support have suggested it. If you do make changes, and want to go back to the original settings, the Restore Defaults button will restore the settings to their defaults.

POP3 Mail Collection

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

POP3 Mail Collection POP3 Mail Collection is when VPOP3 will collect mail from an external POP3 mailbox - for instance, from an Internet Provider. POP3 General This page tells VPOP3 how to collect mail. * POP3 Server Address - this is the name (or IP address) of the POP3 server from which you want VPOP3 to collect mail

SMTP Server Lua Scripting

Anonymous (anonymous@undisclosed.example.com) — 2025-05-08T08:23:35+00:00

SMTP Server Lua Scripting The SMTP Server Lua Script is called SMTPSVR.LUA and can be edited from the Settings -> Scripts page in the VPOP3 settings. This script is called whenever an instance of the VPOP3 SMTP server is launched - ie whenever someone opens a connection to port 25 on the VPOP3 server to send it a message, whether from a local user or an incoming SMTP message.

Autoresponder

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Autoresponder An autoresponder is a way of automatically replying to messages as they arrive in a user's mailbox. In VPOP3, an incoming message must arrive in a user's mailbox for the autoresponder to trigger. If you use forwards, assistants, mappings, etc to divert a message before it arrives in the mailbox, the autoresponder will never trigger. If you want to use an autoresponder, but not keep the original message, then make sure the message arrives in the mailbox (eg by using an 'Assistant'…

What's new in version 5 webmail?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

What's new in version 5 webmail? This is a list of some of the most noticeable changes to VPOP3's webmail interface for version 5. For a more detailed list of changes, view our bugtracker. [VPOP3 Version 5 - mobile compatible webmail] Mobile compatible webmail If you access version 5 webmail from a mobile device, you will probably be redirected to the mobile compatible version. It is a cut-down version of Webmail, which retains the key features, but doesn't utilise the extra features which w…

Sending mail from different email addresses or domains

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Sending mail from different email addresses or domains VPOP3 does not (by default) place any restrictions on which email addresses or domains you can send mail from. However, there may be external restrictions on which email addresses/domains you can send from. For instance, if you send mail through your ISP's mail server, they may only allow you to send mail from specific addresses, or the domain you send mail from may have a sender policy defined, such as

Training the VPOP3 Spam Filter

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Training the VPOP3 Spam Filter The VPOP3 spam filter has a couple of mechanisms which can be used to 'train' it to distinguish between spam and not-spam. Bayesian Filter The Bayesian filter this looks at words in messages sent and received and their probabilities of being contained in spam and not-spam, and works out an overall probability of the message being spam or not-spam based on the combination of those probabilities.

Mail Not Downloading From ISP

Anonymous (anonymous@undisclosed.example.com) — 2026-04-06T17:59:47+00:00

Mail Not Downloading From ISP This normally happens because you have told VPOP3 to Leave Messages On Server (on the Mail Connectors -> Mail Collectors -> (name) -> POP3 General tab). If you do this, VPOP3 will leave messages on the ISP's mail server for several days, and remember that it has already downloaded them. Then, the next time it connects it will see that there are some messages waiting, but it may find that it has already downloaded them, so it won't download them again.

How To Setup VPOP3 Service Security

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How To Setup VPOP3 Service Security VPOP3 can be configured to restrict access to its various services depending on the client computer's IP address. This is useful if you want to allow access from only certain IP addresses (eg within your LAN) and prevent access from other IP addresses (eg the Internet).

Lua SMTP Relay Control

Anonymous (anonymous@undisclosed.example.com) — 2025-08-14T09:24:55+00:00

Lua SMTP Relay Control Every time VPOP3 is going to send messages via SMTP Relay, it runs a script called relayout.lua in the VPOP3 directory. Global Variables This script may have global variables, depending on your version of VPOP3. In VPOP3 3.0.0L and later, there are two read-only global variables set at the start of the script:

SMTP Server -> IDS/IPS

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Server -> IDS/IPS The IDS/IPS tab lets you set logging and automatic blocking parameters for the IDS (Intrusion Detection System) and IPS (Intrusion Prevention System) component of the SMTP server. SMTP servers are regularly attacked, both by incoming mail attacks (spam/viruses etc) and relay attacks (by spammers and other malware distributors trying to send mail through them). Because of this, there is a system in VPOP3 which will track attack attempts on the SMTP service and can automat…

Formatting Syntax

Anonymous (anonymous@undisclosed.example.com) — 2026-03-16T16:00:10+00:00

Formatting Syntax DokuWiki supports some simple markup language, which tries to make the datafiles to be as readable as possible. This page contains all possible syntax you may use when editing the pages. Simply have a look at the source of this page by pressing

Repairing corrupted database

Anonymous (anonymous@undisclosed.example.com) — 2024-01-15T11:35:45+00:00

Repairing corrupted database With PostgreSQL (as with most high-end databases) the database system will automatically recover after power failures etc, if it can. If it can't then there is no manual 'repair' function, because the data cannot totally be recovered (or it would automatically have been recovered).

Spamfilter Whitelist & Blacklist

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spamfilter Whitelist & Blacklist The VPOP3 spamfilter has a whitelist and a blacklist for sender addresses. It also has a whitelist and blacklist for words/phrases. You can view these lists in the VPOP3 settings by going to Settings -> Spamfilter ->

Error message: Your connection has been blocked temporarily - Try again later

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Error message: Your connection has been blocked temporarily - Try again later If you get an error message in your email client software saying Your connection has been blocked temporarily - Try again later or Server access temporarily blocked! Please try again later

ListServer Settings

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

ListServer Settings Settings -> ListServer Settings In VPOP3, the ListServer is an automated 'user' which handles mailing list requests, such as subscribe & unsubscribe commands. Anyone can send an email to the ListServer to subscribe to (public) mailing lists, or unsubscribe from mailing lists they are on, or see a list of public mailing lists etc.

Mappings

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mappings In VPOP3, Mappings are a way of explicitly linking an email address to a user or list. They can also be used to indicate that an email address is remote, even though it would otherwise appear to be a local email address. In other email servers, a similar feature may be called 'aliases'

SMTP Service -> Advanced Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Service -> Advanced Tab Services -> SMTP Server -> Advanced Tab Refuse SMTP Connections from This setting should be rarely needed, and should be normally left blank. It is here for historic purposes. If you put some text in this box, then VPOP3 will refuse any SMTP connections from clients whose 'HELO'/'EHLO' command data contains the text specified here as a substring. Eg, if this setting is set to '.myisp.com', then VPOP3 would refuse SMTP connections from any client which sends the c…

Prune Rules

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Prune Rules The Edit User -> Prune Rules tab can be used to create/edit rules which cause messages to be automatically deleted according to specified criteria. To add or edit a “prune rule”, press the Add Rule button. This will add a new rule to the table, with a set of default settings. Don't worry, this rule doesn't take effect until you press the Submit button.

What is PostgreSQL?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

What is PostgreSQL? PostgreSQL is an SQL database engine. VPOP3 and PostgreSQL In VPOP3 2.x, VPOP3 uses a database engine called SQLite for its database needs. SQLite has limited locking facilities, so on busy systems we encountered problems where databases would need very frequent updates, and the lock limitations would cause the updates to take a long time. For this reason we added optional support for PostgreSQL to later versions of VPOP3 2.x.

Setting up VPOP3 to work with Exchange 2003

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Setting up VPOP3 to work with Exchange 2003 The instructions below are for Exchange Server 2003. For other versions of Exchange see here. You can link VPOP3 to Exchange Server, so that Exchange Server sends outgoing mail through VPOP3 and VPOP3 sends any incoming mail directly to Exchange Server.

Move VPOP3 Version 5 (or later) to a new PC

Anonymous (anonymous@undisclosed.example.com) — 2026-04-21T11:12:40+00:00

Move VPOP3 Version 5 (or later) to a new PC Moving VPOP3 Version 5 or later to a new PC is slightly different from moving earlier versions, because of the database system, which was introduced for version 3 and modified for version 5. The summary of steps is: * Stop VPOP3 on the original PC

VPOP3 Deleting messages as 'old' messages

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 Deleting messages as 'old' messages If VPOP3 says 'deleting old message' in the status window activity log that means that it has seen the unique ID of that message before, longer ago than the time specified for VPOP3 to leave messages on the server, so it thinks that the message is an old message, and so deletes it.

ListServer Commands

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

ListServer Commands The ListServer is an automated process in VPOP3 which manages mailing lists. People can send commands to the ListServer to perform various functions remotely. Whether these commands are allowed, and exactly how they work depends on the particular mailing list's settings.

Misc -> DNS Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Misc -> DNS Tab Settings -> Misc Settings -> DNS The DNS tab lets you specify which DNS servers VPOP3 will use. DNS (Domain Name System) is a system which converts Internet host names (eg www.google.com) into a numeric IP address (eg 1.2.3.4), because all connections on the Internet are actually performed using numeric IP addresses, but it is easier for people to remember names.

Mail Sender Advanced Settings

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mail Sender Advanced Settings Mail Connectors -> Mail Senders -> (name) -> Advanced Advanced Domain Filtering For VPOP3 v6.11 and later, see the Domain Filtering section of the user manual. The Domain Filtering box lets you restrict which email messages are sent via this Mail Sender. You specify each rule on a separate line, and the message will be sent if it matches any sender rule

Signature Script

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Signature Script If you want more complex signatures on outgoing emails, rather than the static text/HTML you can define within VPOP3, then you can use a simple Lua script to define the signature. The Lua script is stored in a file called signature.lua

What is the VPOP3 Antivirus solution?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

What is the VPOP3 Antivirus solution? “VPOP3 Antivirus” is a new product to replace the avast! for VPOP3 product which will no longer be supported after the end of 2012. VPOP3 Antivirus uses the popular 'ClamAV' virus scanner to scan incoming and outgoing messages for viruses.

Socket Error 10048 - Specified Address Already in Use

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 10048 - Specified Address Already in Use This error only normally occurs during VPOP3 startup. It occurs if some other software running on the same machine as VPOP3 is using one of the ports that VPOP3 is already using. This could be a proxy like WinGate, WinProxy or anti-virus software that acts as a proxy, an LDAP server (e.g. Active Directory) or another mail server program (e.g. Exchange Server). The latter two causes are particularly common on

How to create an SSL Certificate

Anonymous (anonymous@undisclosed.example.com) — 2026-03-23T10:18:43+00:00

How to create an SSL Certificate VPOP3 Enterprise supports SSL certificates for encrypted sessions. The basic mechanism to create an SSL certificate is that you have to generate a CSR (Certificate Signing Request) then send that to a CA (Certificate Authority) who will sign your certificate and give you the certificate back.

VPOP3 Database Size

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 Database Size The VPOP3 directory is stored in the VPOP3\pgsql\data folder and subfolders. If you are concerned about the size of the VPOP3 database, there are several factors which may make the database larger than you would expect: * The VPOP3 database contains a lot more information than just messages in mailboxes. This can include settings, outgoing messages, historical logging information, statistical information for the spamfilter, information about archived messages, etc. Also,…

Error Message Handling

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Error Message Handling VPOP3 will normally send an error message to the Main Administrator every time it encounters an error. We recommend you leave it like this in most cases - if an error message occurs repeatedly, then it usually means there's an underlying problem which needs resolving rather than ignoring.

How to Install VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2021-03-08T10:48:40+00:00

How to Install VPOP3 Simply download VPOP3 from the website, and run the installation program and follow the prompts. Occasionally people may have problems with the PostgreSQL part of the installation. If that happens, please contact us either by email at support@pscs.co.uk or by phone to +44 (0)1484 855800, and we will do our best to help.

VPOP3 - POP3 Client Problem

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 - POP3 Client Problem These errors occur whilst VPOP3 is communicating with your ISP's POP3 mail server to retrieve your mail. The server connection was closed unexpectedly If the message text is Error with Pop3 Client (XXXX (YY)) The server connection was closed unexpectedly

VPOP3 re-downloading old messages from the ISP POP3 server

Anonymous (anonymous@undisclosed.example.com) — 2026-01-05T09:31:47+00:00

VPOP3 re-downloading old messages from the ISP POP3 server If you tell VPOP3's POP3 mail collector to leave messages on the ISP's server for a few days, you may find that sometimes VPOP3 will redownload all the messages from the ISP mailbox again.

Archive Script

Anonymous (anonymous@undisclosed.example.com) — 2023-03-25T23:33:31+00:00

Archive Script (from VPOP3 v6 onwards) Archive scripting lets you indicate whether full message content should be stored in the message archive. This could be used, for instance, for filtering out messages containing credit card details. The message headers will still be archived, along with the explanation text returned by the script.

Autoresponder Global Scripting

Anonymous (anonymous@undisclosed.example.com) — 2026-03-23T15:29:29+00:00

Autoresponder Global Scripting For scripting to modify the autoresponder text which is embedded in the autoresponder itself, see Autoresponder Scripting The Autoresponder Global Script is executed for every autoresponse. It is stored in the 'Autoresponder.lua' script in Settings → Scripts

Calendar.Events table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Calendar.Events table The Calendar.Events table contains a record of all the events in calendars managed by VPOP3. An 'event' is an iCalendar event. Note that if an event is a recurring series, there will only be one 'event' in the database, not one event per instance of the recurrence.

Lua SMTP MX Control

Anonymous (anonymous@undisclosed.example.com) — 2026-02-24T15:49:48+00:00

Lua SMTP MX Control Every time VPOP3 is going to send messages using direct MX sending, it runs a script called mxout.lua which can be created/edited in Settings -> Scripts (or in the VPOP3 directory in VPOP3 v6.6 or earlier). Global Variables Starting with v8.8, the following global variables are defined:

Spamfilter Quarantine Viewer

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spamfilter Quarantine Viewer Settings -> Spamfilter -> Quarantine Viewer The Quarantine Viewer lets you see messages which have been quarantined by the VPOP3 Spam Filter. As an administrator you can see quarantined messages for any user, and release them if appropriate. If you release a message, it will be sent into the original recipient's Inbox, not into your Inbox.

SMTP -> General tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP -> General tab This page is reached from Services -> SMTP Server, then the General tab. This page lets you set general settings for the SMTP service component of VPOP3. The SMTP service is how users send outgoing mail, and how incoming SMTP messages arrive. Service Name

Spam Filter Rules: Variables

Anonymous (anonymous@undisclosed.example.com) — 2023-08-14T16:01:01+00:00

Spam Filter Rules: Variables The VPOP3 spam filter script language supports simple variables. In most places these are specified as ${}, but in some places they are just specified as - for instance where a statement always puts its result into a variable.

How do I write an email to technical support?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How do I write an email to technical support? Please send the email to support@pscs.co.uk Note that free technical support is currently only available for version 3.0 and later When sending the email, please make sure you include all relevant information:

Changing a user's password

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Changing a user's password To change a user's password in VPOP3, you should log into the VPOP3 settings, go to the 'Users' page, then double-click on the user whose password you want to change. This will bring up a window giving you access to the user's settings. Go to the 'Passwords' tab where you can set the passwords.

Data stream contained NUL character

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Data stream contained NUL character Description of the problem NUL characters (bytes with value 0) are not allowed in email messages and should not be transmitted over POP3, SMTP or IMAP4 except in certain circumstances. If an attachment contains such a byte it must be encoded using

Database Maintenance

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database Maintenance VPOP3 uses the PostgreSQL database server for most of its data storage. Normally this will not require any special maintenance, because it will manage itself. To do any special database maintenance you will need to close down VPOP3 first, because PostgreSQL needs exclusive access to the database to perform any operations such as decreasing the size of database files. Note that these operations may take some time! There are some PostgreSQL utility programs in the VPOP3\pgs…

How to filter attachments

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to filter attachments VPOP3 can filter attachments in several ways. The most general is to use the Settings -> Attachment Processing -> Filtering tab as described below. VPOP3 can also filter attachments using the content/spam filter, or by using an integrated virus scanner.

Incoming SMTP Feed

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Incoming SMTP Feed An incoming SMTP feed is where incoming mail is sent directly to your mail server without going through your ISP's POP3 mail server on the way. Advantages An incoming SMTP feed has several advantages over going via a POP3 mailbox:

Out of Disk Space When Sending Mail

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Out of Disk Space When Sending Mail The first thing you should do is check that there is enough free disk space on the disk where VPOP3 is installed. VPOP3 requires a certain amount of free space before it will allow new messages to be sent, so the disk might not be totally full, but VPOP3 will still report that there is insufficient disk space when you try to send a new message. This buffer zone is designed to help prevent the disk totally filling up, which can cause lots of bigger problems!

Seeing where a message came from

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Seeing where a message came from Sometimes you need to check to see where a message really came from. The 'From:' email address is easily forged, so that cannot be relied upon. The first thing you have to do is to get the full message headers. These may look daunting, but are very useful for problem diagnosis.

Using VPOP3 with Microsoft Exchange Server

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Using VPOP3 with Microsoft Exchange Server You can link VPOP3 to Exchange Server, so that Exchange Server sends outgoing mail through VPOP3 and VPOP3 sends any incoming mail directly to Exchange Server. You should first of all set up VPOP3 to send and receive Internet email as described in the online help.

VPOP3 Historical Logger Backlog

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 Historical Logger Backlog This problem is primarily related to VPOP3 versions 2.5 -> 2.6. Theoretically it could happen on later versions, but would be extremely unusual (see the note at the bottom if you are using version 3.0 or later) You get an error message with subject

VPOP3 is using a lot of disk space

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 is using a lot of disk space If VPOP3 is using a lot of disk space, the problem is usually that there is lots of data there, so it has to use the disk space. Message Storage In VPOP3 version 5 and later, all users' messages are stored in the database, so they will occupy space in the VPOP3\pgsql\data folder.

Connections

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Connections In VPOP3 a Connection tells VPOP3 how to 'connect' to the Internet. VPOP3 supports up to 10 Connections, which can be either network connections or Dial-Up connections (using a modem) A Connection is linked to one Mail Sender and zero or more Mail Collectors.

Settings -> Diagnostics

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Settings -> Diagnostics The Diagnostics page allows you to enable, configure and disable various methods of diagnostic logging, within VPOP3. Log file overview By default, VPOP3 will keep two copies of most log files: * The current log file, with a

LAN Forwarding Queue Status

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

LAN Forwarding Queue Status To view the LAN Forwarding Queue Status, go to Settings -> Local Mail -> LAN Forwarding -> Queue Status The LAN Forwarding Queue shows the messages which VPOP3 has currently got queued to be sent to another mail server on your network using SMTP. The LAN Forwarding Queue status page shows a simple list of the messages waiting to be sent. The four columns in the table show:

LogDB.SpamRules table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

LogDB.SpamRules table The LogDB.SpamRules table contains a record of the spamfilter rules which matched for messages logged by VPOP3. A message may have zero or more spamrules entries Columns * spamruleid - this is a bigint sequential value which identifies the spam rule entry uniquely in the database

Mail Collectors

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mail Collectors A Mail Collector is how you tell VPOP3 to collect incoming mail. Each Mail Collector is associated with one or more Connections. The VPOP3 Connector Schedule determines when each Connection is run. Mail Collector General Tab Each Mail Collector has a General

msgaudit Database table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

msgaudit Database table This can (optionally) contain data showing how messages have been handled (eg deleted, moved, etc) * id - incrementing ID of msgaudit entry * datetime - the date & time the event occurred * component - which VPOP3 component performed the event

Mail Connectors -> Connector Schedule

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mail Connectors -> Connector Schedule The Connector Schedule tells VPOP3 when to connect to send mail using Mail Senders and collect mail using Mail Collectors. It does not affect incoming SMTP over a permanent connection, or LAN Forwarding. The connection schedule also tells VPOP3 when to check for updates to the

Mail Sender Advanced Relay Settings

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mail Sender Advanced Relay Settings SMTP Return Address The SMTP Return Address (or Return Path) is a hidden part of a message which says where bounce messages (and other automated responses) should be sent. (It is not the same as the Reply address

SMTP Reputation Stats

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Reputation Stats (Added in v6.20) If you receive email by direct incoming SMTP (not via an ISP or filtering service) then you can tell VPOP3 to report sender reputation statistics back to VPOP3. This is enabled/disabled in the Settings -> Misc Settings page.

Spam Filter Rules

Anonymous (anonymous@undisclosed.example.com) — 2023-01-18T15:57:13+00:00

Spam Filter Rules VPOP3 Versions 2.1.7 and later have a built-in spam filter system which supports a simple script language optimised for content- and spam-filtering of email messages. This reference contains a definition of the spam filtering script language supported by VPOP3. Note that as later versions of VPOP3 are released, more language features may be added, so this reference indicates in which version of VPOP3 a particular feature was added.

Spam Filter Rules: GetAddressType

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: GetAddressType Statement GetAddressType Version 2.4.6+ Purpose Analyses a specified email address and reports what 'type' of address it is The GetAddressType statement requires an email address and variable name, in the format

Status

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Status The VPOP3 Status screen has two tabs * Server Status * Sessions Server Status The Server Status tab is essentially a copy of the VPOP3 Status Monitor information. * Connection Status - this shows the 'online' status of VPOP3. If it says idle, it does not mean VPOP3 is not working, or not doing anything, it just means that it is not currently sending or collecting mail from the Internet.

Temporary Files

Anonymous (anonymous@undisclosed.example.com) — 2026-02-19T17:56:27+00:00

Temporary Files This is for files in the VPOP3\_temp folder Most of the filename is the hexadecimal timestamp (in Windows 'FILETIME'/65536 form) with a 4 digit hex sequential number afterwards. The first letter or two (usually G-Z) can tell something about what caused the file.

Message Rules

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Message Rules The Edit User -> Message Rules tab can be used to create/edit rules which are processed when messages arrive in a User's mailbox. They can be used to copy messages, mark them as read, delete them, etc VPOP3 will process Message Rules in the order they appear in the list. If you want to change the order of the rules, you can drag & drop them into the correct order. Usually when VPOP3 has processed a rule, it will go on to check further rules, but you can use the

Spamfilter White/Blacklists

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spamfilter White/Blacklists This lets you set whitelists & blacklists for the spam filter. There are four lists you can manage. The Whitelist Addresses & Blacklist Addresses lists let you specify sender email addresses to check. With the default rule weights, if a sender's address is on the Whitelist, it will be allowed through the spam filter, and if it is on the Blacklist it will be blocked. If an address is on both the Whitelist and the Blacklist, they will cancel each other out, and the me…

What is IMAP4

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

What is IMAP4 IMAP4 (Internet Mail Access Protocol V4) is a new mail retrieval protocol which can be used as an alternative to the POP3 (Post Office Protocol V3). The main difference between IMAP4 and POP3 is that with POP3 the messages are only stored temporarily on the mail server until they are downloaded to the email client where the messages are stored, manipulated, searched etc. With IMAP4 the messages are stored permanently on the server, and they are manipulated, searched etc on the ma…

Frequently Asked Questions

Anonymous (anonymous@undisclosed.example.com) — 2026-03-18T20:51:33+00:00

Frequently Asked Questions Pre-Sales Questions * What is the difference between VPOP3 Basic/Standard and VPOP3 Enterprise? * Do I have to pay VAT? * Will I receive a VAT invoice? * What are the limitations of the Home User licence Sales Questions * How can I place an order? * Can I add two licences together? * I got a copy of VPOP3 via Trialpay and would like a refund General * How do I get support? * VPOP3 Roadmap * What do I do if I have lost my VPOP3 licence details?…

GDPR for VPOP3 self-hosted software

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

GDPR for VPOP3 self-hosted software VPOP3 is an email server program, it is not a service, so if you use VPOP3 on your own computer we are not a “data controller” or a “data processor” under GDPR rules as we never see any of your data (unless you give us permission to remotely connect to your PC for technical support purposes).

Support Remote Access facility

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Support Remote Access facility If you use a paid technical support option we have the facility to remotely access your VPOP3 server if you wish. This allows us to help you resolve issues or assist with configuration or installation issues. You can either allow us to just view your screen and tell you what to do, or you can allow us to control your computer as well.

550 5.7.1 Relaying not allowed! Bad sender IP address

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

550 5.7.1 Relaying not allowed! Bad sender IP address This SMTP error message means that the computer which is sending the message is not permitted to send outgoing messages based on the VPOP3 SMTP Service's Access Restrictions. This is probably because someone is trying to send messages from outside your local network, and you have not configured VPOP3 to allow this. You have to be careful when allowing this, because you may configure VPOP3 to be an open-relay, which is a

550/553 Not Permitted error from BT Internet's mail servers

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

550/553 Not Permitted error from BT Internet's mail servers BT Internet's mail servers only allow messages to be sent from 'approved' email addresses. If you try to send messages from other addresses BT's mail servers may return a '550 Not Permitted' error, a '553' error, or may silently discard the message depending on what their server feels like doing today.

How To Allow Mail Relay Through VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2025-05-21T07:57:18+00:00

How To Allow Mail Relay Through VPOP3 If you are allowing remote access into VPOP3 to collect mail then you may also want those remote users to be able to send their outgoing mail through VPOP3 as well. This is more complex than allowing users to collect mail, because, by default, SMTP connections are not authenticated. This means that when someone tries to send a message through VPOP3, VPOP3 doesn't know who that user is. This can cause a problem if unauthorised users try to send mail through…

Backscatter

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Backscatter In email, “backscatter” is the term used if you send bounce messages back to spam messages. As most spam messages use forged email addresses, then the bounce messages will go to an innocent person, who will find them very annoying. Stopping VPOP3 from sending Backscatter

Copy Outgoing mail

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Copy Outgoing mail Sometimes people need to copy outgoing mail for various reasons. There are several ways of doing this in VPOP3 depending on your exact requirements: * Message Monitoring - this copies all outgoing, incoming and/or internal mail sent by/to specific users to another specific user

How To Encrypt Sessions

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How To Encrypt Sessions VPOP3 Enterprise 2.6 and later supports SSL/STARTTLS encrypted sessions to VPOP3 itself. So, the email client or web browser will encrypt the data passed to VPOP3 so it cannot be intercepted. This requires an SSL Certificate to be created for VPOP3.

Exchange 2007

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Exchange 2007 You can link VPOP3 to Exchange Server, so that Exchange Server sends outgoing mail through VPOP3 and VPOP3 sends any incoming mail directly to Exchange Server. You should first of all set up VPOP3 to send and receive Internet email as normal.

Handling mail for multiple incoming domains

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Handling mail for multiple incoming domains VPOP3 can easily handle mail for several incoming domains. Exactly how you do it depends on the exact situation. All domains are 'aliases' If the domains are aliases of each other, for instance, you have 'mycompany.com' and 'mycompany.org', both of which are the same, so each address at mycompany.com also exists at mycompany.org, and the emails go to the same people regardless of which domain is used, then you simply configure the domains in the ma…

How to install the VPOP3 Status Monitor on other PCs

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to install the VPOP3 Status Monitor on other PCs The VPOP3 status monitor icon is run by a separate program from VPOP3, which communicates with VPOP3 using TCP/IP. This means that this program can be installed on any PC which can connect to the VPOP3 computer using TCP/IP (on port 5109 by default).

We installed a new router and now nothing works

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

We installed a new router and now nothing works If you installed a new router on your network and left it at the default settings, you may find that VPOP3 doesn't seem to work afterwards. This is because it may be that the new router allocates new IP addresses on your network.

Locked Accounts

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Locked Accounts VPOP3 has a security feature which will lock out an account after it has had several failed login attempts. This feature is to make it harder for an attacker to use a brute force or dictionary password attack on an account. The default settings are that after more than 3 attempts to log into an account with an incorrect password, VPOP3 will lock the account for 30 minutes. You can change these settings on the

Outlook/Windows Messaging reports "No transport provider is available"

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Outlook/Windows Messaging reports "No transport provider is available" If Outlook or Windows Messaging reports No transport provider is available when trying to connect to VPOP3, it can mean several things. (This must be a contender for “the world's most meaningless error message

Performance Requirements

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Performance Requirements The performance requirements for VPOP3 depends on many factors, so we can't give specific details for any scenario. How to detect limiting factors * Use the Windows Performance Monitor (perfmon.msc) * Add counters for:

PostgreSQL Replication

Anonymous (anonymous@undisclosed.example.com) — 2019-02-06T17:10:31+00:00

PostgreSQL Replication PostgreSQL 9.1 (used in VPOP3 5 and later) supports replication from a 'Master' to a 'Slave' database server. This can be used with VPOP3 for having a near-realtime backup of your settings & messages. To use the replication, you need to have a file share which is accessible from both PCs. The thing to watch out for is that the PostgreSQL services may be running as a different user from the currently logged in user, so make sure that the user(s) which the PostgreSQL servi…

PostgreSQL server won't start due to damaged log files

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

PostgreSQL server won't start due to damaged log files If the PostgreSQL server won't start at all, because its transaction logs are damaged, you will probably need to recreate the database store totally. To rebuild the database: * Open a command prompt and find the VPOP\pgsql folder

RBL Checking not working in VPOP3 Enterprise

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

RBL Checking not working in VPOP3 Enterprise VPOP3 Enterprise has an RBL checking feature which is configured in the VPOP3 Settings at Services -> SMTP Server -> SPAM Reduction -> Realtime Blacklist Rules If it does not seem to be working properly, there are a few reasons why the RBL feature may not work.

Sender Policy Framework / SPF

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Sender Policy Framework / SPF SPF is a system used to tell mail servers which IP addresses can send mail from which domains. It is designed to reduce 'spoofing' of email addresses. For instance, if you receive an email message from your bank, your mail software can check that it came from an IP address authorised to send mail from your bank, and treat the message with suspicion if it didn't come from an authorised IP address.

SMTP Rule Example - restrict who can send to a local email address

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Rule Example - restrict who can send to a local email address If you have a local email address (a user, group or distribution list) and you want to restrict which email addresses can send messages to this address, you can use SMTP rules. There are a few ways you can configure the SMTP rules for this scenario.

Upgrading VPOP3 to version 8.x from v7 or earlier

Anonymous (anonymous@undisclosed.example.com) — 2020-09-03T15:07:34+00:00

Upgrading VPOP3 to version 8.x from v7 or earlier VPOP3 v8.x uses PostgreSQL 10 as its database engine, which is the latest supported 32 bit version of PostgreSQL. Later versions of PostgreSQL are 64-bit only, which means we cannot use them while continuing to support 32 bit versions of Windows.

Move VPOP3 Version 3 or 4 to a new PC

Anonymous (anonymous@undisclosed.example.com) — 2019-11-12T16:09:08+00:00

Move VPOP3 Version 3 or 4 to a new PC Moving VPOP3 Version 3 or 4 to a new PC is slightly different from moving earlier versions, because of the database system. The summary of steps is: * Stop VPOP3 on the original PC * Manually make a backup of the database on the original PC

VPOP3 Not Starting Properly

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 Not Starting Properly If VPOP3 is not starting properly, then the first thing to check is whether the database server is starting. In VPOP3 v3 and later, VPOP3 uses a PostgreSQL Database server for data storage, so if the database server is not running, VPOP3 will not be able to start properly. In this case, the VPOP3.EXE process may appear in Task Manager, but it won't respond to anything, or it may appear in Task Manager and then stop after a short period.

SMTP Relay Protection in VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Relay Protection in VPOP3 SMTP Relay Protection should be used on ALL SMTP mail servers (such as VPOP3) which have a permanent connection to the Internet. You may also want to use it on servers which are only connected occasionally via a dial-up connection.

VPOP3 Status Monitor Problems

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 Status Monitor Problems The VPOP3 Status Monitor is the program which shows the little (usually red) postbox icon in the Windows task tray. This usually launches automatically from the Windows startup group. This program is VPOP3Status.EXE on the disk, or can be run manually from

Bandwidth Control

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Bandwidth Control (VPOP3 Enterprise Only) Every time a connection is made to a VPOP3 service, or a user logs into a service, VPOP3 Enterprise runs a Lua function which can assign the connection a bandwidth pool, or assign a bandwidth limit on the connection.

Database files used in VPOP3 2.x

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database files used in VPOP3 2.x VPOP3 2.x usually uses SQLite 2.8.3 as its database engine. This stores databases in discrete *.db files in the VPOP3\_database directory on the server PC. We do not recommend that you access these databases directly unless you know what you are doing, and we strongly discourage the alteration of data in the databases directly unless technical support request you to.

Error Handling Scripting

Anonymous (anonymous@undisclosed.example.com) — 2023-11-20T10:18:01+00:00

Error Handling Scripting For most error messages that VPOP3 generates, it allows control of error messages, eg to limit the frequency of error messages if they would be generated repeatedly. These limits are set in Settings -> Admin Settings -> Message Control. However, if you want more granular control, you can use Lua scripting for more fine-grained control

Settings -> Global Address Book

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Settings -> Global Address Book The VPOP3 global address book allows users to access a shared address book from any email client which supports the 'LDAP' protocol (most modern email clients do, but they may call it 'directory service' Importing Entries

Lists

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Lists The Lists section in VPOP3 lets you view and manage the various types of 'List' which VPOP3 supports * Distribution Lists * Mailing Lists * Forwardings * ODBC Mailing Lists * Groups Using a list A list will contain zero or more 'members' (usually email addresses) which can be messaged all at once. To send a message to all the members of a list, you will usually send an email to the listname at a valid domain.

Settings -> Local Mail -> General

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Settings -> Local Mail -> General The Local Mail -> General page allows you to configure a few simple, but fundamentally important settings. Default Domain In the majority† of cases, this is the domain name that VPOP3 will use when sending automated messages; for instance, users may receive a message from

Route incoming POP3 mail by parsing message headers

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Route incoming POP3 mail by parsing message headers This routing method is generally used if you have a catch-all or 'multi-catch' mailbox with your Internet provider. With this method, VPOP3 will look at the To/Cc and other fields in the message headers to try to work out who the message is for. If the recipient is not listed in the headers (eg for BCCd mail) it may not be able to automatically detect who the message is for.

SMTP Service - Filtering

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Service - Filtering The SMTP Server -> Filtering tab lets you set up filtering of messages going through the VPOP3 SMTP service. This may be incoming SMTP messages, or locally sent messages. SMTP Rules SMTP Rules let you create custom rules for processing messages as they go through the VPOP3 SMTP service.

SMTP Service -> VRFY/EXPN Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Service -> VRFY/EXPN Tab Services -> SMTP Server -> VRFY/EXPN Tab VRFY and EXPN are SMTP commands which allow another computer to verify email addresses without sending mail to them. See RFC 5321 for technical details. Usually, these commands should be disabled for security purposes, but some other software may be able to use these commands for various reasons. In this case, you can enable them, but restrict access to the IP address(es) you trust.

Spam Filter Rules: Assignments

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: Assignments You can assign values to variables using the syntax ${variable} = value | ${variable} Assignment operators The spam filter rules support the following assignment operators: = Specify the value of the variable to equal the value after the assignment operator

User Manager Script

Anonymous (anonymous@undisclosed.example.com) — 2024-04-22T08:37:38+00:00

User Manager Script If you want people to be able to log in using a different username than their VPOP3 username (eg if you want them to be able to log in using an email address), then you can use the UserManager Lua script The Lua script is managed through the Settings → Scripts page in VPOP3 v8.0 and later and is called 'UserManager.LUA.

Permissions

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Permissions This section lets you configure the permissions that a particular user has. Allowed Protocols The Allowed Protocols section lets you specify which services this user has access to. Note that these settings affect access to the whole service. If you want users to be able to access a service from some IP addresses, but not from others, then use the

Users

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Users The Users page shows the list of users, as well as giving you some actions which you can perform use the user list. * Import users from file * Import users from Windows * Export users to file * Bulk Add Users * Edit User Welcome Message * Send Admin Message * Edit a User User List Outgoing Messages Just above the main user list is an entry Outgoing Message Queue. Clicking on this will let you see which messages are waiting to be sent out, and you can delete/

Webmail Tabs

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Webmail Tabs From version 4 onwards, VPOP3 webmail has a tabbed structure, which enables you to move between various screens with minimal effort. By using tabs, the entire webmail can be loaded in one go - so there is no need to waste time and bandwidth by downloading the same key components each time you switch between the various parts of the webmail.

SMTPIDSEvents Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTPIDSEvents Replacement Use: ~smtpidsevents~ This returns the latest entries from the SMTP client logging database. It will return 100 entries unless the count parameter is specified in the URL, in which case that will specify the maximum number of entries to return.

Encryption

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Encryption There are several different encryption methods used on the Internet which are relevant to VPOP3. Current versions of VPOP3 Basic will be able to connect to other POP3 or SMTP servers using either SSL or TLS. This allows you to use VPOP3 to access services such as GMail which require SSL/TLS.

GDPR for hosted VPOP3 service

Anonymous (anonymous@undisclosed.example.com) — 2025-10-14T15:43:01+00:00

GDPR for hosted VPOP3 service (Since Brexit, the UK has “UK GDPR” instead of “EU GDPR”, so this document refers to UK GDPR) Also see GDPR for VPOP3 as most of that applies to the VPOP3 hosting service as well. This Data Processing Agreement is part of our hosted VPOP3 service terms. You can view the revision history by clicking on the 'clock' icon to the right.

POP3 Protocol

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

POP3 Protocol POP3 is the most basic email protocol for collecting mail which is in common use. Almost all email client programs (such as Microsoft Outlook & Outlook Express, Mozilla Thunderbird, etc) can collect mail using POP3. With POP3, mail is usually downloaded by the email client and stored on the user's local PC. It is then deleted from the mail server, so the only copy is on the user's PC. Any mail folders etc are all managed on the user's PC.

What is Webmail?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

What is Webmail? “Webmail” is a term used to describe an email client which is accessed through a web page rather than as a standalone program. Some well known services which offer webmail are services such as Hotmail, Yahoo, Gmail etc. All versions of VPOP3 have a Webmail service included as standard.

Which Ports does VPOP3 use?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Which Ports does VPOP3 use? If you want to use VPOP3 through a firewall, you will need to open up some TCP ports in the firewall. VPOP3 uses several ports, for the different services it provides. The best way to see the ports it uses is to go to Services

450 4.3.2 Content Filter Timeout

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

450 4.3.2 Content Filter Timeout If you get this error appearing when messages are sent to VPOP3, either in a bounce message, or in the VPOP3 status monitor, it means that the VPOP3 computer filter is taking more than the allowed amount of time (usually 60 seconds).

550 5.7.1 Recipient Prohibited (x)

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

550 5.7.1 Recipient Prohibited (x) (where 'x' is a number) This means that you have an SMTP rule which is rejecting this recipient. The (x) indicates the SMTP rule number which is causing the rejection. View & edit your SMTP rules at Services -> SMTP Server

Socket Error 11001 - Host not found (authoritative answer)

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 11001 - Host not found (authoritative answer) This means that the ISP POP3 or SMTP server which you have told VPOP3 to connect to does not currently exist. This might be that you have mistyped the server address, or that your ISP is having temporary problems, or that you are using an internal

How to Create a Connection

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to Create a Connection There are two ways that VPOP3 can be configured to connect to the Internet. Which one you use depends on the service provided by your ISP. Using a Permanent 'Always On' Connection This is the most common connection method. It assumes you are connecting to the Internet via a router which is permanently connected. In this scenario VPOP3 simply needs to connect to the router so setting up VPOP3 is very simple.

Error expanding recipient - Nesting Level too deep

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Error expanding recipient - Nesting Level too deep You receive an error message saying: Error expanding recipient "" Nesting Level too deep (51) Check the configuration for loops (Note the '51' number may be slightly different - that's the nesting level - anything over 50 is detected as an error)

Error Messages

Anonymous (anonymous@undisclosed.example.com) — 2025-10-06T15:21:37+00:00

Error Messages This is the place to look if you are trying to trouble shoot a problem and you have received or have access to a specific error message or error code. If instead your problem is that something you think is set up correctly is not working then the best place to look would be the

"Error Sending Message After Authentication" in Webmail

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

"Error Sending Message After Authentication" in Webmail If you get an error while sending a message using Webmail, such as “Error sending message after authentication - error 0 - text 502 Error: command not implemented” this means that you have another SMTP server running on the VPOP3 computer, and when the VPOP3 Webmail service tries to send the message it is sending it to this other SMTP server, rather than to the VPOP3 server. The Webmail service uses internal commands which the other SMTP…

Exceptions

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Exceptions An exception happens if VPOP3 encounters a problem it did not expect. In some cases it can recover automatically, but in other cases that isn't possible. Common causes VPOP3 2.6 and earlier In VPOP3 2.6 and earlier it was quite common for there to be database corruption problems with the SQLite database which was used in those versions.

Forwarded Emails Not Arriving

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Forwarded Emails Not Arriving If you are having problems having VPOP3 forward incoming messages to an external address, but sending messages directly to that address works OK, and forwarding internal messages to that address works OK, then the problem may be the SMTP return address which VPOP3 is using.

French Webmail Language File

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

French Webmail Language File Copy/paste the text below to a file 'french.lng' or 'francais.lng' in the VPOP3 directory. (French users, feel free to update/correct the text below) #login page logintitle=VPOP3 Login webadminlogin=web admin login webmaillogin=web mail login enterusername=You must specify your VPOP3 username here bookmarksnotsupported=I'm sorry, but your web browser does not support this function. You will have to add this page to your bookmarks manually. loginfailed=Login Faile…

Installation conficts

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Installation conficts During installation, the installer program does some basic checks for conflicting software. This is software which is providing the same services as the VPOP3 software - i.e. SMTP, POP3 and/or LDAP services. For POP3/SMTP it will show the text which the conflicting software announces itself as.

Installation Errors

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Installation Errors This page lists some errors which may occur during installation and the solution. In general, do NOT 'ignore' any errors unless we tell you to. If you have to retry an installation, when it is an upgrade from versions 1 - 4 going to version 5 or later, then make sure you have told the installer to install the database. Sometimes a partial installation will make the installer think that the database is already installed.

Setting up an iPhone/iPad/iPod Touch

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Setting up an iPhone/iPad/iPod Touch To set up an iPhone to access VPOP3's mail, you first of all need to configure VPOP3 to allow access by remote users (unless you will only be using the iPhone in the office, connected via WiFi to the office LAN). Adding the mail account to your iPhone/iPad

How to limit size of sent mail

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to limit size of sent mail There are several ways to limit the size of mail which can be sent * Limit the size of mail accepted by the SMTP component of VPOP3 * Limit the size sent for a particular user * Limit size based on 'rules' * Limit size based on

Trying to perform administrative tasks without rights

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Trying to perform administrative tasks without rights This problem can have two symptoms: * When trying to access the VPOP3 settings you get an error “You are trying to perform an VPOP3 administration task while logged in as a non-administrator

How to Obtain Error Logs

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to Obtain Error Logs As part of diagnosing a support issue our support team may ask you to send them various log files. This page explains how to obtain the right files at the right time. How Logging Works Under its default settings VPOP3 logs a minimal amount of information about what it is doing to various files in the main VPOP3 directory. When investigating a support issue it is often the case that we will need you to switch on logging to extra files or increase the level of detail be…

How to Restore a backup of VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to Restore a backup of VPOP3 The instructions below are to restore a full backup. You may also be able to recover deleted messages if you do not need to restore a full backup. Version 5 or later If you just need to restore a database backup, see steps 4 to 7 below.

VPOP3 - SMTP Client Problem

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 - SMTP Client Problem These errors occur whilst VPOP3 is communicating with your ISP's SMTP mail server to send your mail. If the message text is: Error with SMTP Client (XXXX (YY)) The server connection was closed unexpectedly Then this means that the the connection between VPOP3 and your ISP's SMTP mail server was closed when VPOP3 did not expect it to be. This can be caused by the network connection failing or a bug in the ISP's mail server which drops the connection in abnormal circ…

SMTP Rules

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Rules Download rules are applied to messages which arrive at VPOP3 using SMTP - either locally sent messages, or incoming messages received through an SMTP mail feed. To configure the rules, go to the VPOP3 settings, then Services -> SMTP Service

Some PCs cannot access VPOP3 when VPOP3 is connected to the Internet

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Some PCs cannot access VPOP3 when VPOP3 is connected to the Internet This error happens when you have multiple TCP/IP subnets on your network. The computers which are on different subnets from the VPOP3 computer will not be able to see VPOP3 whilst VPOP3 is connected to the Internet (through a dial-up connection). Whenever VPOP3 is offline, it will work correctly.

Troubleshooting Tips

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Troubleshooting Tips Telnet One of the most basic, and useful, tools for troubleshooting email systems is a Telnet client. Installing Telnet Client Unfortunately, since Windows XP, Microsoft do not install the Telnet client into Windows by default, so you may need to install the Telnet client yourself.

How To Upgrade VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How To Upgrade VPOP3 Note: if you are upgrading to VPOP3 version 5 or later from version 4 or earlier, please see How To Upgrade VPOP3 to version 5 Upgrading VPOP3 is a straightforward process. Download VPOP3 from our web site and ideally back up your current installation just in case something goes wrong. Then simply run the installer that you downloaded and install it over the top of your existing VPOP3. All your settings and mail will be preserved.

How to upgrade VPOP3 to version 7 or later from version 6 or earlier

Anonymous (anonymous@undisclosed.example.com) — 2020-06-29T10:43:58+00:00

How to upgrade VPOP3 to version 7 or later from version 6 or earlier As usual the process to upgrade is simply to install the later version over your existing installation (do not uninstall anything first). The below is technical information detailing an extra step performed by the installer in this particular upgrade step.

How to use the VPOP3 Status Monitor

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to use the VPOP3 Status Monitor The VPOP3 Status Monitor is a small program which displays a postbox icon (usually red) in the Windows notification area (usually at the bottom right of the screen - by the clock). This icon can be used for quick access to various VPOP3 facilities. Note that the Status Monitor is

v5 - Move the message store to a new folder/drive

Anonymous (anonymous@undisclosed.example.com) — 2019-11-12T16:10:42+00:00

v5 - Move the message store to a new folder/drive Here is an alternative method, which may be simpler, but only moves the data, not the whole database store (which is a subtle difference) This guide assumes you want to just move the VPOP3 message store/database to a new folder on the same PC, and leave the VPOP3 installation directory where it is.

Error message: VPOP3 does not have write access to the registry - please check and restart VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Error message: VPOP3 does not have write access to the registry - please check and restart VPOP3 VPOP3 needs to be able to write to the Windows Registry at HKEY_LOCAL_MACHINE\Software\PaulSmith. Usually, VPOP3 will run in the 'Local System' user account which has full permission to the HKEY_LOCAL_MACHINE part of the registry. However, it is possible to lock down permissions further, or to run VPOP3 in a different user account. In that case, you may encounter this error message.

VPOP3 Is Responding Slowly

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 Is Responding Slowly If VPOP3 is responding slowly to users there are several common causes: * The VPOP3 server disk may be badly fragmented. Defragment the server disk(s). Note that sometimes the Windows defragmenter will say that the disk doesn't need defragmenting even if it does, so it is best to do it anyway. Also, there is a better free defragmenter available called

VPOP3 Server Access Not Allowed

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 Server Access Not Allowed If you get an error like: -ERR VPOP3 Server access not allowed! when trying to access VPOP3, then this means that the relevant server's IP Access Restrictions defined in VPOP3 do not allow access from your client computer.

About

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

About The VPOP3 'About' page lets you see the version and build number of your VPOP3 installation, along with any licence details, and supplier details (if any) Licence Information The Licence Information section shows your current licence information

Settings -> Admin Settings

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Settings -> Admin Settings The Admin Settings page allows you to perform three key functions: * * * Choosing a Main Administrator The Main Administrator receives notification emails, such as daily reports and errors/problems which may require manual intervention.

Message Archive -> General

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Message Archive -> General Settings -> Message Archive -> General Tab Archive Messages If the Archive Messages box is checked, then VPOP3 will archive incoming and outgoing messages. Main Archive Store Directory You can set the message archive store to any directory accessible by the VPOP3 service. Enter the path in the

Message Archive -> Offline Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Message Archive -> Offline Tab Settings -> Message Archive -> Offline Tab. The Offline tab lets you tell VPOP3 to move old archived messages to an alternative store, such as CD/DVD or external drive etc. VPOP3 will create a ZIP file containing the old messages. The archive index will still remember the messages, and the name of the ZIP file they are contained in, so you will still be able to search for messages on date, sender, subject, etc, but not on the message content.

Settings -> Attachment Processing

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Settings -> Attachment Processing The Attachment Processing page allows you to configure VPOP3 to perform two distinct functions on messages that contain attachments: * * Filtering The Filtering tab is divided into four main sections: Attachment Filtering

Autoresponders - v3 and v4

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Autoresponders - v3 and v4 This section lets you define an autoresponder for a user. An autoresponder is a message which is sent back in response to a message which arrives in this user's mailbox. The Autoresponder Type can be set to None, Simple Autoresponder

Calendar.Calendars table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Calendar.Calendars table The Calendar.Calendars table contains a list of all 'calendars' created in VPOP3. Each user account has at least one calendar Columns * calid - this is a integer sequential value which identifies the calendar uniquely in the database *

Database -> Backups Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database -> Backups Tab The Backups tab lets you specify how VPOP3 will make its daily backup of its database. We strongly recommend that you backup the database regularly in case of disk problems or file corruption. You can use the VPOP3 backup feature, or manually backup the PostgreSQL database using the pg_dump command, or use another program to backup the PostgreSQL database if you wish. Note that a simple disk copy will

Database -> Restore Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database -> Restore Tab This tab is only in VPOP3 Enterprise (v5 and later), and is for performing a partial (mailbox/mail folder) restore of the database. To do a full restore of the database, or for VPOP3 Basic/Standard, see the “Restore a Backup of VPOP3” topic Using the

IMAP4 -> Advanced tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

IMAP4 -> Advanced tab This page is reached from Services -> IMAP4 Server, then the Advanced tab. Here are some advanced options for the IMAP4 service in VPOP3 Fake access to inaccessible mailboxes In the IMAP4 service you may have folders which do not exist. For instance, if you are accessing a shared Inbox folder from a user called 'Karen', then their folder will be called

IMAP4 Server Scripting

Anonymous (anonymous@undisclosed.example.com) — 2025-06-23T10:51:46+00:00

IMAP4 Server Scripting (Added in V6.12) DoCapability function When the IMAP4 CAPABILITY command is received, VPOP3 generates a capability string based on settings, then calls DoCapability(ipaddr, capabilities) * ipaddr = IP address of the client computer

Import Users From File

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Import Users From File VPOP3 supports the importation and exportation of users, via a CSV file (see for a specification of the CSV file format). NOTE: This process is not designed to provide a complete backup of user data, nor is it intended to facilitate moving VPOP3 to a new computer. Instead, see the following relevant pages:

LogDB.Messages table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

LogDB.Messages table The LogDB.Messages table contains a record of all messages logged by VPOP3. A message is logged when a message is sent/received/etc. Columns * msgid - this is a bigint sequential value which identifies the message uniquely in the database

loginaudit Database table

Anonymous (anonymous@undisclosed.example.com) — 2023-08-15T07:33:58+00:00

loginaudit Database table This contains data showing login attempts within the most recent 30 days * id - incrementing ID of loginaudit entry * ipaddress - IP address the login attempt came from * datetime - the date & time the event occurred

Lua SMTP MX Server Rules

Anonymous (anonymous@undisclosed.example.com) — 2026-02-24T15:50:03+00:00

Lua SMTP MX Server Rules Every time VPOP3 checks for remote MX server for sending messages using direct MX sending, it runs a script called mxserverrules.lua which can be created/edited in Settings -> Scripts (or in the VPOP3 directory in VPOP3 v6.6 or earlier).

Message Archive

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Message Archive The Message Archive facility is for VPOP3 to store copies of all messages sent or received. It stores the messages in a central archive store which can be searched by an administrator. The prime purpose of the archive facility is for recording messages in case of possible disputes, as you can see what was sent/received by email. It can also be used as a backup/restore facility in an emergency, but that is not its prime purpose, so it is better to have a proper

Message Headers

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Message Headers This article describes some of the headers which VPOP3 can add to messages. Note that some of these may be added by customisable scripts used by VPOP3, so may not match exactly, but the descriptions below are for the defaults distributed with VPOP3.

Misc -> External Fax Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Misc -> External Fax Tab Settings -> Misc Settings -> External Fax The External Fax tab is for use with some external fax server applications which work by collecting mail from a POP3 mailbox. If a Fax Server Mailbox is selected, then VPOP3 will automatically send any locally sent mail to that mailbox if the recipient is local, but doesn't match another local address (a user, list, mapping etc),

Outgoing Message Scripting

Anonymous (anonymous@undisclosed.example.com) — 2024-03-21T10:49:54+00:00

Outgoing Message Scripting Every time VPOP3 adds a message to the Outgoing mail queue, it runs a script called outmessage.lua. Scripts are stored as files in the VPOP3 directory in VPOP3 v6.6 and earlier, or managed through the Settings -> Scripts page in VPOP3 v6.7 and later.

Password Strength Checking Script

Anonymous (anonymous@undisclosed.example.com) — 2026-01-05T09:25:39+00:00

Password Strength Checking Script You can tell VPOP3 to enforce password strength checks by using a Lua script which performs the checks for you. The Lua script can be edited in Settings -> Scripts and is called passwordcheck.lua (in older versions of VPOP3 it is stored in a file called

Running database updates within a transaction

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Running database updates within a transaction This is a trick which database experts use, because they have learned (often the hard way) that a simple mistype can trash a database... Before running any database query which can alter the database (UPDATE, DELETE, INSERT, DROP, CREATE, ALTER) begin a database transaction using the

Send Admin Message

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Send Admin Message It is possible for administrator users to send a bulk email message to an entire group or list. To begin composing an email, go to the Administration Settings -> Users page, and click Send Admin Message. This should then open a window, which allows you to specify various options.

SMTP Direct Sender Settings

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Direct Sender Settings Mail Connectors -> Mail Senders -> SMTP Direct Sender -> Settings tab The SMTP Direct Settings tab lets you set how VPOP3 will send mail using SMTP Direct DNS Servers to Use This setting tells VPOP3 the IP addresses of the DNS servers it should use to find the recipients' mail servers. Separate multiple addresses with commas.

Spamfilter Rule Weights

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spamfilter Rule Weights To edit the spamfilter rule weights, go to Settings -> Spamfilter -> General -> Rule Weights The VPOP3 spamfilter contains several rules which test for certain things, eg 'adult words', or entries in real-time blacklist databases, or whitelisted email addresses etc.

Spamfilter.Whitelist table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spamfilter.Whitelist table The Spamfilter.Whitelist table contains the spamfilter whitelist entries which do not contain wildcards or regular expressions. They are separated out to speed up checking. Columns * address - this is the email address in the whitelist

Spam Filter Rules: BulkScan

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: BulkScan Statement BulkScan Version 2.1.7+ Purpose Allows you to specify lots of search strings in one section without needing the verbose If statement The BulkScan statement requires a variable name and a limitless number of search specifiers, in the format

Spam Filter Rules: DBQueryOne

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: DBQueryOne Statement DBQueryOne Version 6.16+ Purpose Queries the spam filter database for a single record/aggregate The DBQueryOne statement performs a query on the spam filter database and returns a single value which is either the value of a record or an aggregate of several records.

Status Monitor (port 5109) protocol

Anonymous (anonymous@undisclosed.example.com) — 2019-08-19T08:58:45+00:00

Status Monitor (port 5109) protocol This page documents the protocol used between VPOP3 and the Status Monitor. It's not intended for any other purpose, so it's a bit limited, but in certain cases you may find this useful Login Before the Status Monitor receives any updates or can issue commands it must log in using a user's credentials.

Summary Log File Format

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Summary Log File Format VPOP3 creates a file called SUMMARY.LOG in the VPOP3 directory which contains summary information which is compiled daily into a daily summary reports sent to the administrator. VPOP3 can keep these summary logs in a subdirectory called

User Delivery Script

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

User Delivery Script (VPOP3 v6.5 or later) If there is a /delivery.lua script, this Lua script can override VPOP3's message delivery options. You can edit this in the Settings -> Scripts page in the settings. This script affects how VPOP3 will handle how messages being delivered to this user are handled.

User Routing Script

Anonymous (anonymous@undisclosed.example.com) — 2023-03-27T10:32:18+00:00

User Routing Script If there is a /user_redirect.lua script, this Lua script can override VPOP3's message routing options. You can edit this either in the Settings -> Scripts page in the settings, or via the 'Routing' tab in the user's settings in the VPOP3 administration console. This script affects how VPOP3 will handle how messages

Users.Autoresponders table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Users.Autoresponders table The Users.Autoresponders table contains the users' autoresponder definitions Columns * autoresponderid - this is a numeric id of the autoresponder entry (primary key) * owneruser - this is the numeric id of the user which the autoresponder belongs to (or 0 for a 'template' autoresponder)

Using tables/grids

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Using tables/grids Many VPOP3 settings pages use grids to show you a set of data, for instance on the Users, Mappings and Lists pages. These have several standard features which are described below. * Most of the grids are 'delayed-fill'. This means that they don't fill up with data immediately when the page is loaded, this is to speed up the page load times. Only the first (visible) section of the grid is filled at first (sometimes there may be a short delay before this is filled, if the da…

Webmail Status bar

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Webmail Status bar The Status bar within VPOP3 webmail displays important information at a glance. [VPOP3 version 5.0 Webmail Status bar] User - At the far left, is a display to let you know which user is currently logged in. Version - After the username, there is an indication of the current VPOP3 version.

VPOP3 Wiki

Anonymous (anonymous@undisclosed.example.com) — 2022-10-01T11:36:44+00:00

VPOP3 Wiki Welcome to the VPOP3 Wiki. Here you will find VPOP3 documentation, FAQs and “How To” articles * FAQs * How Tos / Troubleshooting * Reference * Tips & Tricks If you want to add information, hints & tips, etc, you can register on this Wiki and modify or create new pages. Please don't ask questions on the Wiki; if you have a question, ask it on

OutMsgRecipients Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

OutMsgRecipients Replacement Use: [~outmsgrecipients~] Required parameter: MsgID This returns a JSON array containing details on the recipients for the specified message in the VPOP3 out queue. There is one object returned per recipient, and the object is:

SMTPClientAllowRemove Action

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTPClientAllowRemove Action (VPOP3 Enterprise Only) This removes an entry to the SMTP Client Allow list. The data specified is: * IPAddress - the IP address to add. This can be an individual IP address or a CIDR address (IPv4 and IPv6 addresses are allowed)

SMTPClientBlockRemove Action

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTPClientBlockRemove Action (VPOP3 Enterprise Only) This removes an entry to the SMTP Client Block list. The data specified is: * IPAddress - the IP address to add. This can be an individual IP address or a CIDR address (IPv4 and IPv6 addresses are allowed)

SMTPClientBlocks Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTPClientBlocks Replacement Use: ~smtpclientblocks~ ~end~ The format string can have the replacements * address - IP address (returned as host address or CIDR address as appropriate) * date - the date/time the address was added to the database in YYYYMMDDHHMMSS format

SMTPSPFWhitelist Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTPSPFWhitelist Replacement Use: ~smtpspfwhitelist~ ~end~ If you specify the parameter serverid then this will just return white list entries which match all servers or this server. The format string can have the replacements * id - the whitelist entry ID

UserRuleConditions Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

UserRuleConditions Replacement Use: ~userruleconditions~ ~end~ Required parameter: Account, RuleId This returns the message rule conditions for the specified rule The format string can have the replacements * id - numeric ID of the condition

UserRuleList Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

UserRuleList Replacement Use: ~userrulelist~ ~end~ Required parameter: Account This returns the message rule list (in order) for the specified user The format string can have the replacements * id - numeric ID of the rule * order - numeric order number (1-n) of the rule

Dynamic IP Address

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Dynamic IP Address VPOP3 needs to run on a computer with a static (fixed) IP address on the 'local network'. This does not mean that it will not work with ISPs that dynamically assign IP addresses! A computer which has both a LAN adapter AND a dial-up adapter will have two IP addresses: one for the

How do I get support?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How do I get support? You can get support for our software products in several ways. By telephone * You can purchase an annual priority support contract. The cost depends on your current VPOP3 licence, and costs 50% of the licence price per year (with a minimum of £100) per software licence (+VAT if applicable) . This entitles you to software upgrades, remote support and telephone support during UK office hours and priority email support where we aim to respond to your email within 3 hours …

I got a copy of VPOP3 via TrialPay and would like a refund

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

I got a copy of VPOP3 via TrialPay and would like a refund If you obtained a VPOP3 Home User licence via and are unhappy with it, you will need to get in touch with TrialPay directly. Our licence is given as a complimentary offer after you have purchased through them, and they have notified us with your details.

SMTP Relay Service FAQ

Anonymous (anonymous@undisclosed.example.com) — 2021-06-29T08:35:43+00:00

SMTP Relay Service FAQ We provide an SMTP Relay Service for many of our customers. The price starts from £40 (+VAT if applicable) per year, for up to 5000 messages, or 750MB, per month. How do I order the SMTP Relay Service? To order the SMTP relay service, either email

What is Software Maintenance?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

What is Software Maintenance? VPOP3 Software Maintenance includes basic email support (target turnaround within 3 days) as well as version upgrades (eg 6.19 to 6.20) free of charge when they are released during the period of validity of your Software Maintenance.

What is Software Maintenance?

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

What is Software Maintenance? VPOP3 Software Maintenance includes basic email support (target turnaround within 3 days) as well as version upgrades (eg 4.x to 5.x) free of charge when they are released during the period of validity of your Software Maintenance.

Which versions of Windows will VPOP3 run on?

Anonymous (anonymous@undisclosed.example.com) — 2026-03-18T20:53:41+00:00

Which versions of Windows will VPOP3 run on? (Note - no version of VPOP3 will run on “Windows 10 S”) Version 9.0 or later VPOP3 version 9.0 or later requires Windows 8.1/2012R2 later. It needs a 64 bit version of Windows. Version 8.0 or later VPOP3 version 8.0 or later requires Windows 7/2008R2 SP1 or later. It should run on both 32 bit and 64 bit Windows.

FATAL: connection limit exceeded for non-superusers

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

FATAL: connection limit exceeded for non-superusers This error means that there are too many connections to the PostgreSQL database server. VPOP3 having exclusive use of database If only VPOP3 is using the PostgreSQL database, then you can reduce the number of connections that VPOP3 will make to the database at once. This is set in the VPOP3 settings at

421 4.3.2 VPOP3 Too many connections from your IP address - try later

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

421 4.3.2 VPOP3 Too many connections from your IP address - try later If you see this error message when you are sending messages, then it means that VPOP3 has detected too many simultaneous connections from your IP address. This would usually happen if the sender is another mail server as they can make many simultaneous connections when there are lots of messages to send. The error code that VPOP3 gives means that the sender should try sending the messages later, so it should be possible to e…

535 Authentication Failed

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

535 Authentication Failed This is an SMTP error meaning that an attempt to authenticate has failed. If this error is appearing when the email client is trying to log into VPOP3, then you can check the VPOP3 'SECURITY.LOG' file which may contain more information, such as an invalid password, unknown username, etc. (This information is not returned in the SMTP session because it would help an attacker).

552 5.2.3 Message too large - contact your administrator

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

552 5.2.3 Message too large - contact your administrator Or 552 5.2.3 Message exceeds fixed maximum message size If this error message is coming from VPOP3 when you are sending a message, it means that the message you are sending is prohibited by your VPOP3 settings. There are two places where the size limit could be set.

Socket Error 10047 - Addresses in the specified family cannot be used with this socket

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 10047 - Addresses in the specified family cannot be used with this socket Meaning: Addresses in the specified family cannot be used with this socket This error only normally occurs during VPOP3 startup. There are two main possible reasons for this error:

Socket Error 10053 - An established connection was aborted by the software in your host machine.

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 10053 - An established connection was aborted by the software in your host machine. Error 10053 means that an established connection has been dropped. There are three descriptions of this error message we know about, but the descriptions are given by Windows, so they may vary depending on your version of Windows:

Socket Error 10054 - The virtual circuit was reset by the remote end

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 10054 - The virtual circuit was reset by the remote end Error 10054 means that the connection between VPOP3 and a remote computer (eg the ISP or another computer on your LAN) was disconnected by something outside of VPOP3. This is often caused by anti-virus software or Internet security/firewall on the VPOP3 machine but it could be any of a number of things. Any software or hardware that is sitting between VPOP3 and the ISP could be the root cause.

Socket Error 10055 - No Buffer Space Available

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 10055 - No Buffer Space Available Error 10055 means that Windows has run out of TCP/IP socket buffers because too many connections are open at once. Things to check if this happens are: * Is there any other TCP/IP software running on the same PC as VPOP3 - eg a proxy server

Socket Error 10061 - The attempt to connect was forcefully rejected

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 10061 - The attempt to connect was forcefully rejected Error 10061 means that the computer which VPOP3 was trying to connect to (probably at your ISP) refused the connection from the computer running VPOP3. There are several possibilities that can cause error 10061:

Socket Error 10503 - No More Data

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Socket Error 10503 - No More Data Error 10503 means that the connection between VPOP3 and a remote computer (normally your ISP) was dropped at an unexpected time. This is different from the error 10054 in that this is a controlled line drop. One way this can happen is if the ISP's POP3 server uses an obsolete standard which allows it to drop the connection if a POP3 'LIST' command is performed on an empty mailbox. The current standard requires that the connection is not dropped until the clien…

Allow Remote Access to VPOP3 Mailboxes

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Allow Remote Access to VPOP3 Mailboxes Sometimes people want to be able to access their office VPOP3 mail server from a remote site or mobile phone etc. These instructions assume you have a permanent Internet connection (eg ADSL, Cable etc). If you don't have a permanent Internet connection, see

Alternative method of automatically starting VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Alternative method of automatically starting VPOP3 VPOP3 usually automatically starts as a Windows service. Sometimes this does not work, either because other services need to start first, or Windows is going very slowly at startup, causing the database service to time out, or there are certain database control files which did not get cleared after a previous Windows shutdown.

Android - Stock Client

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Android - Stock Client Warning If you use the stock email client from Android 4.x, then be VERY careful if you are using POP3 download. It appears that the stock client will download all the messages from your mail server every time it checks for mail, so you could use a

Archiving not saving messages on a shared drive

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Archiving not saving messages on a shared drive If the VPOP3 archive facility is reporting “Possible error accessing main store directory” and the archive store directory is a drive on another network computer, then there are a few possible difficulties that you have to be aware of.

How to automatically forward spam to the PSCS spamtrap

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to automatically forward spam to the PSCS spamtrap Spam filter companies use “spamtraps” to catch samples of spam for analysis so filters can be updated. We do this here as well. Most types of spam are already caught by our spam traps, however sometimes people get lots of spam which gets through the filter because their particular type of spam does not currently get sent to our spam traps.

Autoresponders / Out of Office

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Autoresponders / Out of Office VPOP3 has an autoresponder facility for sending automatic replies when a message arrives in a mailbox. This is often used for 'Out of Office' replies, but it is not limited to that use. To set an autoresponder, the administrator can edit the user and go to the

Autoupdate process failed with error code 786432

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Autoupdate process failed with error code 786432 This is actually a success result from the automatic update program, which is incorrectly being identified as an error in VPOP3. This will be fixed in VPOP3 v6.15 In fact, this means that the automatic update program needed to be restarted automatically because it had updated itself. It is not a problem. Future versions of VPOP3 will suppress this error message.

How to Backup VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to Backup VPOP3 By default VPOP3 v3 and later will automatically perform a daily backup of the database into a file called DBBACK-x.DMP, where the backup file rotates on a weekly basis (DBBACK-0.DMP is Sunday's backup, DBBACK-1.DMP is Monday's backup, etc).

Calendars in Mozilla Thunderbird

Anonymous (anonymous@undisclosed.example.com) — 2022-01-26T10:47:35+00:00

Calendars in Mozilla Thunderbird The Thunderbird email client supports CalDAV calendars as standard. This can be used to access VPOP3's CalDAV server. To add a VPOP3 CalDAV calendar to Mozilla Thunderbirdis straightforward * Add the calendar to Thunderbird

Configuring Calendar on iOS

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Configuring Calendar on iOS These instructions are for configuring a new Calendar account on iOS for iPhone, iPad and iPod Touch. The version of iOS used for these instructions is iOS v6.0, but they will probably work or help with other versions of iOS.

Calendars

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Calendars To use the calendar facility in VPOP3 you need a CalDAV aware client. We have tested it with the free Mozilla Sunbird & Lightning products as well as the emClient email client. These products need a URL to be able to access the CalDAV data store. Once you have the URL (see below), copy it into the

Can't alter dates in Autoresponder Rules

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Can't alter dates in Autoresponder Rules If you try to edit an Autoresponder Rule which has a start/end time set, you may notice that you can't edit the dates in there. This is because VPOP3 prevents you from setting it so that the “start date” is after the “end date

Configure Email Signatures

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Configure Email Signatures * Global Signatures * Personal Signatures * Webmail Signatures Notes When creating a signature it is generally best to keep it as short as possible. Disclaimers & confidentiality notices in emails are generally regarded as having little or no legal significance, so lengthy signatures just use up bandwidth.

Configure SRS

Anonymous (anonymous@undisclosed.example.com) — 2025-08-18T15:28:11+00:00

Configure SRS In VPOP3 8.8 and later, you can use Lua scripting to implement 'SRS' (Sender Rewriting Scheme') in VPOP3 This involves adding a couple of functions to rewrite outgoing return paths in 'relayout.lua' or 'mxout.lua' as appropriate and a couple of functions to redirect rewritten bounce message recipients in 'smtpsvr.lua'

How to create a Mail Sender

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to create a Mail Sender In VPOP3 a Mail Sender tells VPOP3 how to send mail out to another mail server, usually for sending mail across the Internet. To create a mail sender, go to the VPOP3 Settings, then Mail Connectors. In the Mail Senders section on the left, choose

Delete an outgoing message

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Delete an outgoing message To delete an outgoing message, go into the VPOP3 settings, then go to the 'Users' page. At the top of the page will be a line saying Outgoing Message Queue. Click on that line, and this will show you all the messages waiting to go out. You can now select the message(s) in question, and press the

Download Rules

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Download Rules Download rules are applied to messages downloaded using a POP3 mail collector. To configure the rules, go to the VPOP3 settings, then Mail Connectors -> Mail Collectors -> POP3 General. There is an Edit Download Rules button which brings up the download rule editor. To tell this mail collector to use the download rules, ensure that the

How to download VPOP3

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to download VPOP3 To download VPOP3 go to www.pscs.co.uk and click on Download/Try underneath VPOP3 Email Server (1) If you are wanting to download a previous version of VPOP3, click on the download previous versions link (2) Full Downloads If you are wanting to download the current version of VPOP3, click on the appropriate link (3).

-ERR Mailbox Locked error

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

-ERR Mailbox Locked error If your email client displays an '-ERR Mailbox Locked' or '-ERR [IN-USE] Mailbox Locked' error when trying to log into VPOP3 it means that the mailbox is locked. The POP3 standard requires that POP3 mailboxes have an 'exclusive lock' on them when they are in use. This means that only one POP3 client can access the mailbox at once. Also, if a POP3 mailbox is currently accessing a mailbox, then no IMAP4, Webmail or administrator access is allowed to the mailbox at the s…

-ERR Unknown User

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

-ERR Unknown User -ERR Unknown User is a POP3 error. There are two places you can receive it: * If you receive it as part of a 'POP3 Client Error' email message from VPOP3, then it means that VPOP3 was unable to log on to your ISP's mail server because the ISP POP3 server reported an error

Find the IP address of the VPOP3 Computer

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Find the IP address of the VPOP3 Computer To find the IP address of the VPOP3 computer, in Windows go to Control Panel -> Network and Sharing Center. Press the Local Area Connection link Then press 'Details'. Look for the 'IPv4 Address' setting.

German Webmail Language Page

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

German Webmail Language Page Copy/paste the text below to a file 'german.lng' in the VPOP3 directory. (German users, feel free to update/correct the text below) #login page logintitle=VPOP3 Login webadminlogin=web admin login webmaillogin=Webmail Anmeldung enterusername=Sie müssen einen Benutzernamen angeben bookmarksnotsupported=I'm sorry, but your web browser does not support this function. You will have to add this page to your bookmarks manually. loginfailed=Anmeldung fehlgeschlagen …

Configuring iCal on Mac OSX to connect to VPOP3's CalDAV service

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Configuring iCal on Mac OSX to connect to VPOP3's CalDAV service This requires VPOP3 v6 or later. The following instructions are for Mac OS X v10.7.5 but should work with similar versions. We have not been able to create an account by going to System Preferences

Internationalisation

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Internationalisation VPOP3 has two places where internationalisation can be carried out. In the VPOP3 directory on the server are some *.LNG files. These are language files for the WebMail interface. You can create a new language file by copying the ENGLISH.LNG to another file, eg FRANCAIS.LNG, and then use a text editor (eg Notepad) to edit the text strings in there (the text after the '=' on each line

ISP needs SSL connection

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

ISP needs SSL connection A few ISPs use a non-standard and not recommended system of encrypting connections to their SMTP mail servers. These generally are called 'SSL' connections and work on an alternate port other than the standard SMTP port 25. (The correct way to encrypt connections is to use a system called TLS which works on the standard SMTP port).

ISP needs you to connect on port 587

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

ISP needs you to connect on port 587 Some ISPs will need you to send mail using port 587, instead of port 25. Port 587 is the 'SMTP Submission' port which is commonly used instead of, or as well as, the standard SMTP port 25 for when users are sending mail to a smart host/relay server.

How to Obtain Message Headers

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to Obtain Message Headers Most people are familiar with mail headers such as From:, To:, Subject: etc. but there are many more which most people never see. Quite often we need to see the full internet mail headers from an e-mail that is causing problems. This article explains how to get hold of them in some of the more common e-mail clients.

Outbound Messages Not Appearing in Monitor Target Mailbox

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Outbound Messages Not Appearing in Monitor Target Mailbox For VPOP3 to monitor outbound messages it needs to be able to work out that the message is FROM: a user whose mail should be monitored. To do this it has to examine the FROM: address in the message header.

Outlook / Outlook Express is sending mail repeatedly

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Outlook / Outlook Express is sending mail repeatedly If you are using Outlook or Outlook Express you may occasionally find that mail is being sent repeatedly. There are a couple of possible reasons for this which we know of Sending taking too long

VPOP3 - POP3 Client Connection Problem

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 - POP3 Client Connection Problem These errors occur during the period when VPOP3 is trying to establish a connection to your ISP's POP3 mail server to receive incoming mail. They can mean that you have entered the POP3 Server address incorrectly, or that there is a problem with the network, or that your ISP's mail server is not working properly.

Problems sending messages to spam@

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Problems sending messages to spam@ If a VPOP3 user forwards a message to spam@, then the VPOP3 spam filter will train itself that that message was spam. If, when you forward the message, you get an error message like: Subject: Mail Delivery Failure Delivery Failure Report. The following message was incorrectly addressed. Recipient: "spam" is unrecognised.

Spam Quarantine

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Quarantine By default, when the VPOP3 spam filter detects a message as being spam, it will go to the user's quarantine. Users can release messages from the quarantine by going to their webmail page and selecting the message from the quarantine list there.

Recovering messages from corrupted database into fresh database

Anonymous (anonymous@undisclosed.example.com) — 2025-09-11T13:48:07+00:00

Recovering messages from corrupted database into fresh database If the VPOP3 message database is corrupted, then one option is to build a fresh database and restore the settings into it, then recover the messages from the old database using the 'Message Restore' function in VPOP3. This has minimal downtime, but old messages will not all be available until the restore has completed. New messages will be available quickly, and you will be able to send messages.

How to remove messages from the outbound queue

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How to remove messages from the outbound queue To delete messages from the VPOP3 'OutQueue': * log into the VPOP3 settings * go to the Users page * click on the OutQueue entry in the accounts list. This will show you a list of all the messages waiting to be sent by VPOP3

Restore Deleted Calendars

Anonymous (anonymous@undisclosed.example.com) — 2022-11-18T11:43:52+00:00

Restore Deleted Calendars This article will help if a user has been deleted and all their calendars are lost and need to be restored. Note that this functionality is not built into VPOP3, and requires the use of Python3 to run a script First you need to install Python 3.8 or later, and the psycopg2 plugin

Restore selected mail folders or mailbox in VPOP3 v5 or later

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Restore selected mail folders or mailbox in VPOP3 v5 or later (This option is only available in VPOP3 Enterprise) First - if the problem is that messages were deleted very recently (the default is within 3 days), you can probably use the Undelete feature in VPOP3.

Router Problem error messages

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Router Problem error messages If you get an error message to the VPOP3 administrator with subject Router Problem and text Local Distribute to Failed Error: Database Error "ERROR: could not open file "base//": Permission denied"

Sender Domain Must Resolve

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Sender Domain Must Resolve If you receive an 'SMTP Client Error' something like: 451 (user@domain.com) Sender Domain Must Resolve this means that the ISP's mail server cannot find the domain.com part of the email address. Often this means that the FROM address of the message is invalid, or that the

Setup steps for multiple POP3 accounts at the ISP

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Setup steps for multiple POP3 accounts at the ISP * Set up all the local users you need in the 'Users' page in the VPOP3 settings. The usernames & passwords do not have to have any relation to the ISP's accounts. These are the details which the users will put in their email clients (eg Outlook) to collect their mail from VPOP3.

VPOP3 - SMTP Client Connection Problem

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 - SMTP Client Connection Problem These errors occur during the period when VPOP3 is trying to establish a connection to your ISP's SMTP mail server to send outgoing mail. They can mean that you have entered the SMTP Server address incorrectly, or that there is a problem with the network, or that your ISP's mail server is not working properly.

Spam filter / Content filter scripts

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam filter / Content filter scripts The spam filter system uses basic scripting language for processing messages. This can be used for custom content filtering as well if you need to look inside the messages (e.g. at message content, attachments) as well as at the message headers etc.

Timeout problems downloading/uploading messages with attachments

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Timeout problems downloading/uploading messages with attachments There are various possible reasons for this, usually to do with third party internet security software but they may also be associated with Windows TCP/IP or dial-up adapter issues. You may not have problems with other software, but that doesn't mean the problem is being caused by VPOP3.

"Too many logins" error message

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

"Too many logins" error message VPOP3 version 4 and later have a limit on the number of concurrent logins which can be received for a single user or from a single IP address. This is to prevent a single user from bringing the server down. The current default limits are 20 per user, or 1000 per IP address (to allow multiple people sharing a NAT IP address)

Total Rebuild of Database

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Total Rebuild of Database If you suspect database corruption, sometimes the best thing to do is to totally rebuild the database. This involves six steps: * Stop VPOP3 * Backup Database * Delete Database * Re-create Database * Restore/Create Database

Transmission Receipt Message

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Transmission Receipt Message This is not an error message, but we are listing it here because it confuses some people. VPOP3 sends a 'Transmission Receipt' when a message is sent out, and it contains a header asking for the receipt. The default configuration is that it will send the transmission receipt if the sender asks for a read receipt.

Unable to access Webmail/Admin when using Kaspersky Antivirus/Internet Security

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Unable to access Webmail/Admin when using Kaspersky Antivirus/Internet Security If you are unable to access Webmail/Admin when using Kaspersky Antivirus/Internet Security, it may be Kaspersky which is blocking the site. One user has reported that you can solve this by the following steps: - Go to the Kaspersky Web Anti-virus Section - Add the server

How To Upgrade VPOP3 to version 5 or later

Anonymous (anonymous@undisclosed.example.com) — 2019-11-08T15:37:52+00:00

How To Upgrade VPOP3 to version 5 or later Upgrading VPOP3 is usually a straightforward process. Download VPOP3 from our web site and back up your current installation just in case something goes wrong. Then simply run the installer that you downloaded and install it over the top of your existing VPOP3. All your settings and mail will be preserved.

Upgrading VPOP3 to version 9.x from v7 or v8

Anonymous (anonymous@undisclosed.example.com) — 2026-03-18T20:49:54+00:00

Upgrading VPOP3 to version 9.x from v7 or v8 VPOP3 v9 and later requires a 64 bit version of Windows 8.1 or later VPOP3 v9.x uses PostgreSQL 18 as its database engine. This can only easily be upgraded from PostgreSQL 9.3 or later, which means it must be an upgrade of VPOP3 v7 or later. If you are using an earlier version of VPOP3, then upgrade it to v8.7 first, then upgrade to v9 or later

Spam Filter User Documentation

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter User Documentation Below is a document which may be useful for providing to users for using the VPOP3 spamfilter as a user (not administrator) spamfilter

Using VPOP3 Spam Filtering with LAN Forwarding

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Using VPOP3 Spam Filtering with LAN Forwarding When using the VPOP3 Spam filter with LAN forwarding you need to be aware a bit of how it works. The spam filter will only quarantine messages which are going to a VPOP3 user. This is because that user needs to be able to log into VPOP3 to be able to view their quarantined messages.

How To Move VPOP3 Version 2 to a New Folder/Drive on the same PC

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

How To Move VPOP3 Version 2 to a New Folder/Drive on the same PC (Also applies to version 1.x) To move VPOP3 to a new folder or drive on the same PC you should go through the following steps: * Copy the VPOP3 directory and subdirectories from the old folder to the new folder.

How To Move VPOP3 Version 2 to a New PC

Anonymous (anonymous@undisclosed.example.com) — 2019-11-12T16:06:44+00:00

How To Move VPOP3 Version 2 to a New PC (Also applies to version 1.x) To move VPOP3 to a new PC you should go through the following steps: * Copy the VPOP3 files * Copy the VPOP3 directory and subdirectories from the old PC to the new PC. (If you are moving to Windows Vista/2008/7/2012/8 or later, do NOT copy the files to a 'Program Files' folder on the new PC. Recent versions of Windows have special protection for those folders, which is not compatible with VPOP3)

How to move VPOP3 V5+ to a new folder

Anonymous (anonymous@undisclosed.example.com) — 2021-03-19T16:01:48+00:00

How to move VPOP3 V5+ to a new folder This guide assumes you want to move the whole of VPOP3 (including the message store) to a new folder on the same PC * Stop VPOP3 * Stop VPOP3DB * Remove the VPOP3DB service * Move VPOP3 to the new folder

VPOP3 2.x crashes when user tries to download mail

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 2.x crashes when user tries to download mail If VPOP3 2.x crashes when a user tries to download mail, there are a few possible causes we know of: * A virus scanner or Internet security software is interfering with the connection between VPOP3 and the email client and is either terminating VPOP3 deliberately, or is blocking VPOP3 causing another part of it to crash

Error message: VPOP3 Alert - Non-existent user -

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Error message: VPOP3 Alert - Non-existent user - If you receive an error message like: Subject: VPOP3 Alert - Non-existent user - Delivery Failure Report. There was incoming mail for non-existent user "". This means that VPOP3 downloaded a message using POP3 and it was addressed to an email address which does not exist.

VPOP3 cannot access PostgreSQL - timeout expired

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3 cannot access PostgreSQL - timeout expired This is an error which may be logged in the Windows event log It is event 4547 from the source 'VPOP3' If the event message DLL is not correctly installed it may display as: The description for Event ID ( 4547 ) in Source ( VPOP3 ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this desc…

Error Message - VPOP3 xxxx Server Access Not Allowed - See Your Administrator

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Error Message - VPOP3 xxxx Server Access Not Allowed - See Your Administrator If you get an error message when trying to connect to the VPOP3 SMTP/POP3/IMAP4/etc service which says VPOP3 xxxx Server Access not allowed - See your administrator (where xxxx is replaced with the specific service name, and there may be protocol specific error codes before the message)

UserRuleConditions Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

UserRuleConditions Replacement Use: ~userruleconditions~ ~end~ Required parameter: RuleId This returns the message rule conditions for the specified rule The format string can have the replacements * id - numeric ID of the condition * field - field/data to test

UserRuleList Replacement

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

UserRuleList Replacement Use: ~userrulelist~ ~end~ Required parameter: None This returns the message rule list (in order) for the current user The format string can have the replacements * id - numeric ID of the rule * order - numeric order number (1-n) of the rule

Address Book tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Address Book tab The Address Book tab within VPOP3 webmail enables you to manage your lists of contacts and add those contacts into a new or existing message. Substantial alterations to the interface were introduced in version 5. Both interfaces are documented.

Autoresponder scripting

Anonymous (anonymous@undisclosed.example.com) — 2025-05-28T09:24:38+00:00

Autoresponder scripting For scripting to alter the whole autoresponder definition and set in the VPOP3 settings rather than embedded in an autoresponder itself, see Autoresponder Global Scripting In an autoresponder, you can create a Lua script by surrounding it with & tags, eg

Settings -> Database

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Settings -> Database The Settings -> Database page lets you configure the use of the back-end database which VPOP3 uses for configuration data, message storage and other uses. Tabs * Backups * Query * Connection * Message Store * Restore

Database -> Message Store Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database -> Message Store Tab This tab says how VPOP3 handles its message store Message Store The Delay while moving messages setting tells VPOP3 how quickly to import messages into the new database structure if it was upgraded from version 2.x or earlier. Usually this is OK to be left as it is, but if there is some special requirement to import the messages more quickly, you can decrease this number, but that will increase the load on the server.

DMARC Reporter Script

Anonymous (anonymous@undisclosed.example.com) — 2023-11-12T09:51:40+00:00

DMARC Reporter Script (from VPOP3 v8.6 onwards) This script lets you customise how VPOP3 sends DMARC reports to the sending domain. This can be useful in case the sending domain's DMARC configuration is incorrect as that can cause errors sending the reports or cause messages to be 'stuck' in VPOP3's Outqueue. These problems won't cause any lasting damage, but may be inconvenient or annoying, so you can alter the behaviour using Lua scripting

Download Rules

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Download Rules Download rules are a facility in VPOP3 where it can look at message summary information before downloading a message from an ISP POP3 mailbox (they do not work on incoming SMTP messages - use SMTP Rules for that) To edit download rules, go to

Database query to export LAN Forwarding rules

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database query to export LAN Forwarding rules At a command prompt in the VPOP3 directory run psql (The password is 'vpop3pass') Then, type \copy (select conditions, address, server, username, password, outaddress as rewriteaddress, matchcount as matches from rules.lanforwarding order by ruleorder) to 'c:/temp/x.csv' csv header;

Database query to get all lists and members

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database query to get all lists and members At a command prompt in the VPOP3 directory run psql (The password is 'vpop3pass') Then, type \copy (select l.name, address from users.listmembers m inner join users.lists l on m.list=l.id) to 'c:/temp/x.csv' csv header;

IDS Log Event Numbers

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

IDS Log Event Numbers The VPOP3 SMTP IDS logging facility logs SMTP events in a form which may be useful to Intrusion Protection Systems, or security monitoring software. One of the fields in the log file is the Log Event Number These are: * 0 = SMTP authentication failure

LAN Forwarding Scripting

Anonymous (anonymous@undisclosed.example.com) — 2025-08-20T16:08:40+00:00

LAN Forwarding Scripting (Added in V8.7) This is stored in the 'LanForwarding.lua' script in Settings -> Scripts Pre-send These functions are called before the message is placed in the LAN Forwarding queue There are two global variables set: *

LogDB.Attachments table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

LogDB.Attachments table The LogDB.Attachments table contains a record of the attachments for messages logged by VPOP3. A message may have zero or more attachments Columns * attachid - this is a bigint sequential value which identifies the attachment uniquely in the database

LogDB.Recipients table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

LogDB.Recipients table The LogDB.Recipients table contains a record of the recipients for messages logged by VPOP3. A message may have one or more recipients Columns * rcptid - this is a bigint sequential value which identifies the recipient uniquely in the database

LogDB.Sessions table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

LogDB.Sessions table The LogDB.Sessions table contains a record of all 'sessions' logged by VPOP3. A session is something like a POP3 server session as an email client downloads messages, or an SMTP client session as VPOP3 sends a message out to the Internet, and so on.

Logging

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Logging Activity Summary Reports You can tell VPOP3 to send you a daily summary report each day. To do this check the box to say Send daily summary logs to, and choose the appropriate user (or “Main Administrator” if you want the reports to be sent to the

Mail Connectors -> Mail Senders

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mail Connectors -> Mail Senders The Mail Sender tells VPOP3 how to send mail out to the Internet. If you want to send mail for specific users to another specific mail server (e.g. a local Microsoft Exchange Server or another VPOP3 server) then use the

Mail tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mail tab The Mail tab within VPOP3 webmail enables you to manage your sent and received messages. As you can see from the screenshot, the page is divided into three main sections: Menu bar General tab bar Status bar [Mail tab - VPOP3 Version 5 Webmail] Page structure Mail toolbar The Mail toolbar contains the following buttons:

Database query to make LAN Forwarding immediately attempt to dequeue all pending messages

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Database query to make LAN Forwarding immediately attempt to dequeue all pending messages If VPOP3 cannot send messages using LAN Forwarding it will queue the message and retry periodically. Usually there is no need to do anything special if there was a problem with the onward mail server which has now been fixed, VPOP3 should soon retry the messages automatically (based on the value of the

Management Scripting

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Management Scripting In VPOP3 Enterprise, from version 6.17 there is the facility to run Lua scripts manually or according to a schedule. These scripts can do things like access mail folders & messages and perform some maintenance on them. Creating a new script

Message Monitoring

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Message Monitoring Message monitoring in VPOP3 will tell VPOP3 to send a copy of all the outgoing, internal and/or incoming mail from/to specified users to be sent to another specified user. In the current versions of VPOP3, all monitored messages are sent to the same user (or list), you cannot specify different recipients for different monitored users. (This may be something that is added/enhanced in the future)

Misc -> General Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Misc -> General Tab VPOP3 Host Name The VPOP3 Host Name is used by VPOP3 when it is telling other mail software what it is called. For instance, when it connects to another SMTP server it will send the host name as the parameter for the HELO or EHLO command, and when an SMTP client connects to VPOP3, it announces its name in the welcome banner as required by the SMTP standard.

Misc Settings

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Misc Settings This page contains some settings for VPOP3 which there is no other obvious place for them to go. * General Tab * DNS Tab * Disk/Memory Checking Tab * External Fax Tab * BATV Tab * Proxy Tab * Advanced Tab * Network Tab * Bandwidth Pools

Reports

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Reports The Reports tab lets you access various reports about VPOP3 or message history. For many of reports to work, you need to have previously enabled historical logging. The currently available reports are listed below. To view a report, click on its name at the left of the page

Reset Message Folder Counts

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Reset Message Folder Counts In extremely rare cases, the mail folder message counts in the database may get out of step with the actual stored messages. There are database triggers which will keep the counts in sync during normal operation, but if you have to manipulate the database directly (eg to recover from a corrupted database) it is possible that they will get out of step.

Scheduled Task Script

Anonymous (anonymous@undisclosed.example.com) — 2021-08-09T10:55:07+00:00

Scheduled Task Script Note that this functionality is only available in VPOP3 Enterprise VPOP3 Enterprise can run Lua script periodically to do custom background tasks. It can run a function every minute, 5 minutes, hourly or daily. The Lua script is stored in a file called

Scheduling Management Scripts

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Scheduling Management Scripts VPOP3 runs a script called scheduler.lua in the background, it will periodically call functions in this script at approximately 1 minute, 5 minute, 1 hour and 1 day intervals. These times are only approximate so should not be relied upon for timing.

Security Settings -> Intrusion Protection Tab

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Security Settings -> Intrusion Protection Tab Settings -> Security Settings -> Intrusion Protection Tab Starting in VPOP3 v6.0, VPOP3 can monitor failed logins for all accounts across all services and block an attacker's IP address from accessing VPOP3 for a specified time

Services

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Services This page lets you see and manage the services which VPOP3 provides for other programs, such as email clients. These are how users communicate with VPOP3. * General * POP3 Server * SMTP Server * IMAP4 Server (VPOP3 Enterprise Only) * Password Server * Finger Server * LDAP Server * WebMail Server * Status Server * NNTP Server

Mail Connectors -> Mail Senders -> SMTP Direct

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Mail Connectors -> Mail Senders -> SMTP Direct VPOP3 can be configured to send mail directly to the recipient's mail server (or the recipient's mail service provider). Usually this is only used if you have a high-end business class Internet connection - such as a leased line, or your mail server is co-located in a data centre. Attempts to use SMTP Direct sending on a dial-up/ADSL/Cable/FTTC/etc connection may be problematic since the receiving mail server may think you a home user who has been …

SMTP Server -> Spam Reduction

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

SMTP Server -> Spam Reduction The Spam Reduction tab lets you configure various ways VPOP3 can reduce spam and email address spoofing Domainkeys “Domainkeys” is a way of signing a message to show that it comes from the person it claims to come from. The system is too complex to go into here, but it essentially takes key parts of the message header, as well as the message body and creates a PKI digital signature on it, using a 'private key' on your system. The receiving end will find the same…

Spamfilter database comparators

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spamfilter database comparators Several Spamfilter DB statements allow comparators which are listed below If the value specified in the statement is numeric: * = or == compare numeric values for equality * <> or != compare numeric values for inequality

Spam Filter Rules: Rule names and weights

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: Rule names and weights The script can designate names to refer to certain rules. This name is created using a DefineRule statement. If you the follow a statement by a word in square brackets, when that statement is actioned, VPOP3 will add the specified word to a list of 'matched conditions' which can be used in reporting.

Spam Filter Rules: DBDeleteTime

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: DBDeleteTime Statement DBDeleteTime Version 6.16+ Purpose Deletes records from the spam filter database based on their last update time The DBDeleteTime statement requires a component name, comparator and time value, in the format

Spam Filter Rules: DefineRule

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: DefineRule Statement DefineRule Version 2.1.9+ Purpose Defines a rule name, default weighting and description. See Rule names and weights The DefineRule statement requires a name, default weight and description, in the format DefineRule "" ""

Spam Filter Rules: ForEach

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: ForEach Statement ForEach Version 2.1.7+ Purpose Causes a loop to be run through for all values within specified criteria The ForEach statement requires either two or three parameters (depending on the type of loop that is being conducted), in the format

Spam Filter Rules: GetUserGroup

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: GetUserGroup Statement GetUserGroup Version 2.4.5+ Purpose Checks if the specified user is assigned to a VPOP3 group, and returns the group name The GetUserGroup statement requires a username and variable name, in the format GetUserGroup

Spam Filter Rules: HTTPPost

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: HTTPPost Statement HTTPPost Version 2.4.9+ Purpose Enables the script to post data to a web server The HTTPPost statement requires a url, data string, headers variable name and content variable name, in the format HTTPPost

Spam Filter Rules: IfMatch

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: IfMatch Statement IfMatch Version 2.1.7+ Purpose Allows you to perform a regular or substring match on a variable or part of the message being processed IfMatch statements require a data parameter and a search value, in the format

Spam Filter Rules: Reject

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Spam Filter Rules: Reject Statement Reject Version 2.4.5+ Purpose Perform an SMTP 'Reject' on the incoming message The Reject statement requires an error code/text string, in the format Reject This will reject the current SMTP message with the specified SMTP result code. Use a 4xx error code (eg 450) to reject the message temporarily, or a 5xx error code (eg 550) to reject the message permanently.

Useful Database Queries

Anonymous (anonymous@undisclosed.example.com) — 2026-03-16T11:02:32+00:00

Useful Database Queries Below are some database (SQL) queries which may be useful in some situations. You can run these from the 'psql' program at the command prompt. Some can also be run from the Settings -> Database -> Query page in the VPOP3 settings.

Useful other things

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Useful other things Scripts/batch files/etc which may be useful * batch file to end a database backup

Users.AutoresponderConditions table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Users.AutoresponderConditions table The Users.AutoresponderConditions table contains a record of all autoresponder trigger conditions created in VPOP3. These tell VPOP3 when a particular autoresponder should fire for a particular user. Each autoresponder can have zero or more conditions. An autoresponder with zero conditions will never fire but can be reactivated later by adding a new condition.

Users.Users table

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Users.Users table The Users.Users table contains a record of all users created in VPOP3. Columns * usernumber - this is a number which is used to refer to the user in other database tables * username - this is the text name of the user username is case insensitive and is indexed in lower case, so to take advantage of the index use something like

VPOP3.PostgresQuery

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

VPOP3.PostgresQuery The Lua function 'VPOP3.PostgresQuery' performs a query on the PostgreSQL database and returns the results in a table It takes a single parameter which is the SQL query to perform (Note that any relations used in the query must have the schema specified).

VPOP3.UnHexString

Anonymous (anonymous@undisclosed.example.com) — 2024-10-29T16:09:37+00:00

VPOP3.UnHexString Added in VPOP3 8.7 This function Decodes a Hex string into the original data VPOP3.UnHexString(hex-text) The input hex-text should have no extra spaces or punctuation, and be two hex digits per result byte. Any pairs of characters which are not valid hex will be processed as a 'zero' byte.

Webmail Menu bar

Anonymous (anonymous@undisclosed.example.com) — 2018-11-14T10:45:49+00:00

Webmail Menu bar The Webmail Menu bar within VPOP3 webmail enables you to quickly perform relevant actions. The Menu has six main headings; of which, three have multiple options. Option Active Function V Notes Message Mail and View Message tabs Opens/closes Message menu