PSCS Wiki

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.

Lua Scripting

Anonymous (anonymous@undisclosed.example.com) — 2026-03-26T23:49:01+00:00

Lua Scripting Lua is a simple scripting programming language often used for embedding in other applications. VPOP3 uses it to customise behaviour in places where most people will be happy with the default behaviour, but occasionally people will want to do something more complicated. Rather than having lots of extra options to complicate things for most users, we have opted to go for a more flexible scripting facility.

Spam Filter Rules: GetSectionMD5

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

Spam Filter Rules: GetSectionMD5 Statement GetSectionMD5 Version 2.3.6+ Purpose Performs an MD5 hash on a specified MIME section of the message, and returns the result into the specified variable in hex encoded form The GetSectionMD5 statement requires a message section number and variable name, in the format

Spam Filter Rules: GetDecodedSection

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

Spam Filter Rules: GetDecodedSection Statement GetDecodedSection Version 2.1.11+ Purpose Returns a specified MIME section of a message into a variable, after processing any Base64 or Quoted-Printable encoding of the raw message data The GetDecodedSection

Spam Filter Rules: GetSectionEncoding

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

Spam Filter Rules: GetSectionEncoding Statement GetSectionEncoding Version 2.3.9+ Purpose Retrieves the MIME encoding method for the specified MIME section number, and returns the result into the specified variable The GetSectionEncoding statement requires a message section number and variable name, in the format

Attachment Processing Script

Anonymous (anonymous@undisclosed.example.com) — 2022-11-24T09:29:03+00:00

Attachment Processing Script (Added in v7.6) This script has functions to allow message attachments to be altered: * NeedsRecode * NeedsRewrite * GetRename * GetContentDispositionLine (added in v7.8) * IsLockNeeded * RewriteAttachment

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.

Welcome to your new DokuWiki

Anonymous (anonymous@undisclosed.example.com) — 2022-10-01T11:32:39+00:00

Welcome to your new DokuWiki Congratulations, your wiki is now up and running. Here are a few more tips to get you started. Enjoy your work with DokuWiki, -- the developers Create your first pages Your wiki needs to have a start page. As long as it doesn't exist, this link will be red:

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

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

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

Spam Filter Rules: GetMD5

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

Spam Filter Rules: GetMD5 Statement GetMD5 Version 2.3.6+ Purpose Performs an MD5 hash on a string, and returns the result into the specified variable in hex encoded form The GetMD5 statement requires a string and variable name, in the format GetMD5

Spam Filter Rules: GetRFC822Date

Anonymous (anonymous@undisclosed.example.com) — 2023-08-14T15:53:15+00:00

Spam Filter Rules: GetRFC822Date Statement GetRFC822Date Version 2.2.1+ Purpose Converts an RFC 822 format date field into the number of days elapsed since 1st January 1601 The GetRFC822Date statement requires a date in RFC 822 format and a variable name, 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

VPOP3.GetMessages Lua function

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

VPOP3.GetMessages Lua function The Lua management function 'VPOP3.GetMessages' retrieves a table containing all the mail messages in a specified folder. VPOP3.GetFolders(username, folder); * username is the username from VPOP3.GetUsers * folder is the folder from VPOP3.GetFolders It returns a table where the key is the message UID and the value is a table of:

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.

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.

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

Autoresponder Commands

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

Autoresponder Commands This article only applies to VPOP3 v4 and earlier A VPOP3 autoresponder can contain special text strings to create special behaviour, in addition to plain text as part of the response. There are three types of 'command' *

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).

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

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.

How to tell VPOP3 that some users in the local domain are not to be handled by VPOP3

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

How to tell VPOP3 that some users in the local domain are not to be handled by VPOP3 In some situations you will have a situation where most of your users are handled by VPOP3, but several users will collect their mail directly from a separate POP3 account on your ISP, even though they may have an email address on the same domain as other users.

How to make VPOP3 re-download POP3 messages from the ISP

Anonymous (anonymous@undisclosed.example.com) — 2026-04-06T17:57:00+00:00

How to make VPOP3 re-download POP3 messages from the ISP If you have the VPOP3 Mail Collector setting Leave Mail On Server enabled, then VPOP3 will leave your messages on the ISP POP3 server for the specified number of days after downloading it. If, during this time, you want to make VPOP3 download those messages again, then you can do so.

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.

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).

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

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: *

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

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

VPOP3.DeleteMessage Lua function

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

VPOP3.DeleteMessage Lua function The Lua management function 'VPOP3.DeleteMessage' marks a specified message to be deleted, or removes the deleted flag. Messages marked to be deleted will not be deleted immediately, but only when that mailbox is 'purged' from an IMAP4 client.

VPOP3.GetFolders Lua function

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

VPOP3.GetFolders Lua function The Lua management function 'VPOP3.GetFolders' retrieves a table containing all the mail folders for a specified user. VPOP3.GetFolders(username); It returns a table where the key is the folder name (in IMAP4 UTF-7 encoded format - see

VPOP3.MarkMessageRead Lua function

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

VPOP3.MarkMessageRead Lua function The Lua management function 'VPOP3.MarkMessageRead' marks or unmarks a specified message as read. VPOP3.MarkMessageRead(username, folder, UID, read); * username is the username from VPOP3.GetUsers * folder is the folder from VPOP3.GetFolders * UID is the UID from

VPOP3.PurgeMessage Lua function

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

VPOP3.PurgeMessage Lua function The Lua management function 'VPOP3.PurgeMessage' deletes the specified message immediately. VPOP3.PurgeMessage(username, folder, UID); * username is the username from VPOP3.GetUsers * folder is the folder from VPOP3.GetFolders * UID is the UID from VPOP3.GetMessages

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 …

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:

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.

Windows Server Port Conflicts

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

Windows Server Port Conflicts LDAP Server Conflict When you run VPOP3 on a server edition of Windows you may receive an error saying LDAP server not started - couldn't bind socket port 389 (10048) This error happens because VPOP3 contains an LDAP (Lightweight Directory Access Protocol) server for its global address book functionality, and the Windows 2000/2003 'Active Directory Service' also uses LDAP as its mechanism. These two services are conflicting.

550 5.7.1 Unable to Relay for...

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

550 5.7.1 Unable to Relay for... When trying to send emails from your email client software you get an error in your email client 550 5.7.1 Unable to relay for ... This error is happening because you have installed the Microsoft IIS SMTP Service, and your email client is talking to that service rather than to VPOP3.

How to send a fax by email using the VPOP3 FaxServer

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

How to send a fax by email using the VPOP3 FaxServer VPOP3 2.1.0 and later together with the VPOP3 FaxServer software allows you to send specially crafted emails to VPOP3 to have them sent as faxes. To do this, send an email to fax@ . The email subject will be the subject of the fax used on the fax cover page. The email should be in plain text (not

Error message after sending RCPTTO: - error 0 - text 550 5.7.1 Relaying not allowed! Bad sender IP address

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

Error message after sending RCPTTO: - error 0 - text 550 5.7.1 Relaying not allowed! Bad sender IP address If you get this error message from within Webmail, then it usually means that the SMTP service access restrictions are blocking Webmail from sending mail.

"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…

Initial Configuration Tasks

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

Initial Configuration Tasks After installing VPOP3, you will need to get into the VPOP3 settings. The easiest way of doing this is to find the VPOP3 Status Monitor in the Windows task tray. Right-click this icon, and choose 'VPOP3 Settings'. (If that doesn't work, see this article to troubleshoot Status Monitor problems). Alternatively, on the VPOP3 PC, you can go to Start

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

Not Working As Expected

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

Not Working As Expected This is the page to come to if you think you've set something up correctly but it isn't doing what you think it should be doing. If you're getting an error message or some other concrete indication that something has actually 'gone wrong' then the

POP3/Webmail/IMAP4 can't see a user's messages, but the administrator can

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

POP3/Webmail/IMAP4 can't see a user's messages, but the administrator can Version 2.x only. This problem does not occur with version 3 or later. This problem can happen if the user's message index database has become damaged. The POP3, Webmail & IMAP4 services get the message summary data from the database, whereas the administrator console gets the message information directly from the message files on the disk, so if the database is corrupted, the administrator console can still see the mess…

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

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.

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.

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.

VPOP3.GetMessageLines

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

VPOP3.GetMessageLines The Lua function 'VPOP3.GetMessageLines' retrieves content lines from the message currently being processed This function is only available in the ProcessMessage function of the POP3CLT.LUA or SMTPSVR.LUA scripts. It takes one parameter: * number - number of lines to retrieve

VPOP3.GetMessagePart

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

VPOP3.GetMessagePart The Lua function 'VPOP3.GetMessagePart' retrieves a MIME part of the message currently being processed. This function is only available in the ProcessMessage function of the POP3CLT.LUA or SMTPSVR.LUA scripts. It takes one parameter: * The MIME part 'Path' from the MimeStructure parameter to the ProcessMessage function

VPOP3.GetMessagePartBody

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

VPOP3.GetMessagePartBody The Lua function 'VPOP3.GetMessagePartBody' retrieves the content of a MIME part of the message currently being processed. This function is only available in the ProcessMessage function of the POP3CLT.LUA or SMTPSVR.LUA scripts. It takes one parameter:

VPOP3.GetMessagePartHeader

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

VPOP3.GetMessagePartHeader The Lua function 'VPOP3.GetMessagePartHeader' retrieves a MIME section header of the message currently being processed. This function is only available in the ProcessMessage function of the POP3CLT.LUA or SMTPSVR.LUA scripts. It takes one parameter:

VPOP3.GetSetting

Anonymous (anonymous@undisclosed.example.com) — 2018-12-11T17:06:01+00:00

VPOP3.GetSetting The Lua function 'VPOP3.GetSetting' retrieves a general setting from VPOP3 It takes one parameter: * The name of the setting. This can either by the 'Name' field of the 'Settings.Settings' database table or the internal setting name

VPOP3.GetUsers Lua function

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

VPOP3.GetUsers Lua function The Lua management function 'VPOP3.GetUsers' retrieves a table containing all the users defined in VPOP3, it takes no parameters and returns a table indexed from 1 to N where the values are the user names.

VPOP3.RenameFolder Lua function

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

VPOP3.RenameFolder Lua function The Lua management function 'VPOP3.RenameFolder' renames a folder for the specified user. VPOP3.RenameFolder(username, folder, newname); * username is the username from VPOP3.GetUsers * folder is the folder from VPOP3.GetFolders * newname is the new name for the folder.

VPOP3Net.GetHTTP

Anonymous (anonymous@undisclosed.example.com) — 2021-03-09T16:42:44+00:00

VPOP3Net.GetHTTP This function takes a single parameter * the URL to retrieve. This can be http:// or https:// The function returns two values * a table containing the result of the GET * Host - the hostname * File - the filename * Headers - a table containing the response headers

Version 5 Web Admin API

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

Version 5 Web Admin API This section is only relevant for people who may want to access the Administration features from their own scripts, or want to customise the standard administration pages. Note that no free support is available for this. This is not a full list of features, but it will be updated from time to time.

Can I change the VPOP3 licence owner name?

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

Can I change the VPOP3 licence owner name? The VPOP3 licence owner name is tied to the licence key, so you cannot just change the name without getting a new licence key. There is generally no need to change the licence owner name since it is not published anywhere, but if you really must change the name, then you can request a name change if you upgrade to a later version or larger size of VPOP3 or there is a £10 administration fee if you just want to change the name without upgrading the lice…

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?…

Lost Licence Details

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

Lost Licence Details If you have lost your VPOP3 licence key, we will be able to find it for you, but we do have to make a nominal charge of £5.00 (+ VAT if applicable) to search for it as it is a time consuming task. If you need us to do this search, then email sales@pscs.co.uk.

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 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.

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

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).

Error 1068 - the dependency service or group failed to start

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

Error 1068 - the dependency service or group failed to start If you get an error 1068 when you try to start VPOP3, then this usually means that the VPOP3DB service (if you are using VPOP3 v5 and later) did not start. In this case try starting that service manually and see what error message is generated then.

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

Socket Error 11002 - Host not found (Non-Authoritative answer)

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

Socket Error 11002 - Host not found (Non-Authoritative answer) This means that VPOP3 is not getting a response from a DNS server when it is trying to look up the name of the ISP's mail server(s). Usually this means that Windows either does not know the address of a valid

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.

VPOP3 Webmail/admin service and/or Status service is not listening on correct IP addresses or ports

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

VPOP3 Webmail/admin service and/or Status service is not listening on correct IP addresses or ports Sometimes, VPOP3 can be configured so that the Webmail/admin service, or Status service is not listening on the correct IP addresses or ports. This can be hard to fix through normal methods, since you may not be able to get into the settings to change the settings.

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 Delete a User

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

How to Delete a User To delete a user from VPOP3, go to Users -> Accounts, select the user you wish to delete, and press the Delete button. Deleting an administrator You cannot delete the user as whom you are currently logged into the VPOP3 settings (e.g.

Don't download big messages during the working day using Download Rules

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

Don't download big messages during the working day using Download Rules Say you don't want to download messages over 10,000,000 bytes long between 8:00am and 6:00pm. To do this, create a download rule as: * Rule Type: Ignore * Match Type: All Conditions

Error creating Service Entry (VPOP3) - 5

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

Error creating Service Entry (VPOP3) - 5 If you get this error while running VPOP3SVC QuickConfig to install the VPOP3 service this might mean that some security software is blocking it from creating the service. This has been observed with Sophos Antivirus. In that case, go to the Quarantine Manager in Sophos, and

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.

How to Forward Messages to an External Address

Anonymous (anonymous@undisclosed.example.com) — 2025-08-18T15:13:06+00:00

How to Forward Messages to an External Address There are two possible methods to forward messages to an external address: * Use this method if it is for a person who might want to receive their email whilst in the office and/or get the mail sent to an external address.

IMAP4 'Ghost Folders'

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

IMAP4 'Ghost Folders' Sometimes your IMAP4 email client may show folders in the folder tree, but when you select them, you get an error that the folder does not exist. This happens because IMAP4 has the concept of being able to 'subscribe' to folders - this means that you can hide folders by unsubscribing from them.

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.

SMTP error 'Invalid HELO name'

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

SMTP error 'Invalid HELO name' When sending mail you may get an error from the remote SMTP server saying something like 'Invalid HELO name' This happens if the host name configured in VPOP3 does not look like a valid Internet host name (e.g. 'mail.domain.com'). Some SMTP servers don't bother checking this value because it has no authentication value at all, but a few do check that it looks correct.

LAN Forward Warning: 452 (4.3.1 Insufficient system resources)

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

LAN Forward Warning: 452 (4.3.1 Insufficient system resources) If you get this message in VPOP3 it means that VPOP3 is trying to forward a message on to another mail server (probably Microsoft Exchange Server), and that other server is rejecting the message with the error

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

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

Message Downloads Not Completing

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

Message Downloads Not Completing The normal reason for message downloads not completing is that a third-party antivirus program is scanning the messages and getting stuck at some point. We recommend that the first thing you do is to temporarily disable the email scanning part of any antivirus program or Internet Security software on the VPOP3 computer (other than those integrated fully with VPOP3 - i.e. 'avast! for VPOP3' or 'Sophos SAV Interface'). Usually that will solve the problem.

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 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.

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

The ping command is a useful way of diagnosing network problems. It's similar to the sonar ping in a submarine. It sends out a signal to a specified machine and waits for a response to be echoed back. * Open a command prompt * Type ping www.pscs.co.uk. You should see a display like this:

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

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.

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 a database backup

Anonymous (anonymous@undisclosed.example.com) — 2025-12-17T09:19:40+00:00

Restore a database backup By default VPOP3 makes a daily backup of the VPOP3 database to a file 'DBBACK-n.DMP' in the VPOP3 installation directory (it is possible to change this in the settings). These are cycled on a weekly basis so you will usually have the last seven days' worth of backups. These can be useful if the database gets damaged somehow.

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"

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.

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

VPOP3 Status Service Disabled

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

VPOP3 Status Service Disabled In some versions of VPOP3, occasionally the Status Service may get disabled if there was a problem during initialisation - this will prevent the VPOP3 Status Monitor from connecting to VPOP3. To check this, run RegEdit, and find

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

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 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.

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

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 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.

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.

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

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.

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)

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

LAN Forward Warning: 452 (4.3.1 Insufficient system resources)

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

Version 5 Web Mail API

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

Version 5 Web Mail API This section is only relevant for people who may want to access the WebMail features from their own scripts, or want to customise the standard Webmail pages. Note that no free support is available for this. This is not a full list of features, but it will be updated from time to time.

Access Restrictions Internal Format

Anonymous (anonymous@undisclosed.example.com) — 2023-08-02T08:22:37+00:00

Access Restrictions Internal Format VPOP3 internally stores service IP Access Restrictions in its settings database using the following format to encode the multiple entries These are stored in the settings database as *ALLOWED*.DAT (using VPOP3SETTINGS GET *ALLOWED*.DAT will list them)

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

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

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

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;

Database query to list ALL messages in the LAN forwarding queue

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

Database query to list ALL messages in the LAN forwarding queue The VPOP3 settings show the first 100 messages in the LAN forwarding queue. Usually this is sufficient as the LAN forwarding queue is usually nearly empty, but in case of a problem it may be much bigger. The database queries below may help in that situation.

Database query to list messages in the LAN forwarding queue waiting to go to a specific server

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

Database query to list messages in the LAN forwarding queue waiting to go to a specific server The VPOP3 settings show the first 100 messages in the LAN forwarding queue. Usually this is sufficient as the LAN forwarding queue is usually nearly empty, but in case of a problem it may be much bigger. The database queries below let you list just messages going to a specific server.

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

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.

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

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.

Use the spam filter scripting to add fixed text to the subject on incoming messages

Anonymous (anonymous@undisclosed.example.com) — 2021-12-13T15:20:04+00:00

Use the spam filter scripting to add fixed text to the subject on incoming messages This needs VPOP3 version 5 or later. This script allows you to add fixed text to the subject an incoming message, eg so that users can see that a message is an incoming rather than local message (be aware of weaknesses in this strategy - eg forwarded messages, spoofing of the marker, breaking DKIM message signatures, etc)

Use the spam filter scripting to add random text to the subject on incoming messages

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

Use the spam filter scripting to add random text to the subject on incoming messages This needs VPOP3 version 5 or later. This script is for the case where you want a message to the 'support' user to have the text [XXX-99999] added to an incoming message's subject if it does not already exist. Some people want this text to use as reference numbers for a

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

Increase the spam score for certain recipients

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

Increase the spam score for certain recipients This script is for the case where you want certain recipients to have a weighted score. For instance if you have users who have left and who mostly receive spam, but you don't want to reject their mail totally.

Increase the spam score for header marker

Anonymous (anonymous@undisclosed.example.com) — 2020-10-05T16:14:12+00:00

Increase the spam score for header marker This script is for the case where your ISP adds a header eg 'X-Spam: Yes' to the message header, and you want the VPOP3 spamfilter to quarantine messages with that marker. Add the following to the spamrules_userchecks.txt file. This script file only gets processed on incoming messages (the spamrules_localmail.txt script ends the processing of locally sent messages)

Allow messages through from a specific IP address

Anonymous (anonymous@undisclosed.example.com) — 2022-01-25T11:59:27+00:00

Allow messages through from a specific IP address This script allows messages through the spam filter if they arrive at VPOP3 from a specific SMTP sender (only when the message is sent directly to VPOP3 using SMTP, not via another server). Add the following to the spamrules_userlocal.txt file. This script file gets processed on all messages.

Spamrules example - increase spam score for long sender domain

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

Spamrules example - increase spam score for long sender domain This script is for the case where you to increase the spamminess of emails where the sender's email address contains a long domain. In this case we'll say if the sender's domain has 20 or more characters in the first section (between the @ and first .). Note that we do not necessarily recommend that you do this as it is not a very good indicator of spam, but it is something we've been asked for, so here it is.

Spamrules example - increase spam score if there are many links in the email

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

Spamrules example - increase spam score if there are many links in the email This script is for the case where you to increase the spamminess of emails where the email contains many links - in this case we'll say if the email contains 10 or more links. Note that we do not necessarily recommend that you do this as it is not a very good indicator of spam, and will probably catch a lot of newsletter type emails, but it is something we've been asked for, so here it is.

Spam Filter Rules: Goto

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

Spam Filter Rules: Goto Statement Goto Version 2.1.7+ Purpose A mechanism for directing the script towards a specified label The Goto statement requires a label name, in the format Goto Labels are single word entries that appear on a line of their own, immediately preceded by the colon (:) character. The colon character is not part of the label name.

Spam Filter Rules: Random

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

Spam Filter Rules: Random Statement Random Version 2.5.2+ Purpose Generates a random number The Random statement requires a lower and higher numeric bound, and a variable to assign the result to, in the format Random *

Spam Filter Rules: StartDNS

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

Spam Filter Rules: StartDNS Statement StartDNS Version 2.2.1+ Purpose Begins an asynchronous DNS lookup in advance of the result being required in a subsequent DNS statement The StartDNS statement requires a type and hostname, in the format StartDNS

Spam Filter Rules: StartDNSBL

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

Spam Filter Rules: StartDNSBL Statement StartDNSBL Version 2.2.1+ Purpose Begins an asynchronous DNS blacklist lookup in advance of the result being required in a subsequent DNSBL statement The StartDNSBL statement requires a hostname and DNSBL zone, in the format

Spam Filter Rules: StartSURBL

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

Spam Filter Rules: StartSURBL Statement StartSURBL Version 2.2.1+ Purpose Begins an asynchronous SURBL lookup in advance of the result being required in a subsequent SURBL statement The StartSURBL statement requires a hostname and SURBL zone, in the format

Spam Filter Rules: Stop

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

Spam Filter Rules: Stop Statement Stop Version 2.1.7+ Purpose Stop processing the spam rules Example # Statements Stop # The script has stopped processing before it gets to this line

Spam Filter Rules: ZipContents

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

Spam Filter Rules: ZipContents Statement ZipContents Version 6.7+ Purpose Enables the script to obtain the list of files contained in a ZIP attachment The ZipContents statement requires a message section number and bag name, in the format ZipContent

Spam Filter Rules: ZipContentsFull

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

Spam Filter Rules: ZipContentsFull Statement ZipContentsFull Version 6.7+ Purpose Enables the script to obtain the list of files contained in a ZIP attachment The ZipContentsFull statement requires a message section number and bag name, in the format

Spam Filter Rules: ZipCount

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

Spam Filter Rules: ZipCount Statement ZipCount Version 6.7+ Purpose Enables the script to obtain the number of files contained in a ZIP attachment The ZipCount statement requires a message section number and variable name, in the format ZipCount

Increase the spam score for subject marker

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

Increase the spam score for subject marker This script is for the case where your ISP adds a marker eg '[spam]' to the message subject, and you want the VPOP3 spamfilter to quarantine messages with that marker. Add the following to the spamrules_userchecks.txt file. This script file only gets processed on incoming messages (the spamrules_localmail.txt script ends the processing of locally sent messages)

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.

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.

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.

User Routing Options

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

User Routing Options Assistant The assistant for a user is an email address (or set of email addresses, separated by semicolons) where incoming messages to this user will be copied or redirected. Normally messages will be copied to the assistant, but if the

VPOP3.MessageReset

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

VPOP3.MessageReset The Lua function 'VPOP3.MessageReset' resets an internal read pointer to the start of the message being processed This function is only available in the ProcessMessage function of the POP3CLT.LUA or SMTPSVR.LUA scripts. It takes no parameters The function returns no value

VPOP3.MessageSeek

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

VPOP3.MessageSeek The Lua function 'VPOP3.MessageSeek' sets an internal read pointer to the specified location of the message being processed This function is only available in the ProcessMessage function of the POP3CLT.LUA or SMTPSVR.LUA scripts. It takes one parameter:

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