PSCS Wiki

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

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

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.

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).

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

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

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.

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.

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…

Problems accessing VPOP3 Settings

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

Problems accessing VPOP3 Settings If you have problems accessing the VPOP3 settings: * Go to Start -> Programs -> VPOP3 -> Configure VPOP3 on the VPOP3 computer. That should open up a web browser and take you to the login page * If VPOP3 doesn't show the login page, and shows a '403' error page instead, that means that the access restrictions for the WebMail service have been restricted so that this computer cannot access the WebMail service.

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.

Using a Mobile Phone with VPOP3

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

Using a Mobile Phone with VPOP3 Many people want to use a mobile phone to send/receive their email nowadays. This is usually easy to do with VPOP3. The recommended way is to have the phone connect directly to VPOP3 for sending/receiving email. To do this, you need to do three things:

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.

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

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 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

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 10049 - The specified address is not available from the local computer

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

Socket Error 10049 - The specified address is not available from the local computer This error normally means that you have entered an invalid address on the IP Address to Bind To entries on the Services page in the VPOP3 settings. The addresses entered here should be either

Socket Error 10060 - Operation Timed Out

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

Socket Error 10060 - Operation Timed Out This error is quite self explanatory. It means that Windows reported that a connection attempt or idle connection timed out. If this error occurs during a connection attempt (eg in a VPOP3 - SMTP Client connection problem error message), then it means that Windows couldn't connect to the ISP mail server within a fixed time (the timeout limit is fixed within Windows itself). This problem can either mean that your ISP is having a problem, that you are con…

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

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.

Database & Disk Caching

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

Database & Disk Caching Disk Caching One key point is that, like all other high-end databases, PostgreSQL should not be run on a server with disk level write back caching. With write back caching, the disk will report data as being written to disk when it is still in the disk's cache memory. If the power then fails, this data is lost and can cause database corruption. As long as the database server really knows when the data has been written to disk, power failure will not cause database corru…

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.

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:

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).

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.

How to install PostgreSQL to use another port

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

How to install PostgreSQL to use another port If the VPOP3 computer has a version of PostgreSQL older than version 8.3 installed for other software, and you can't/don't want to remove that you need to set up the PostgreSQL 8.3 or later for VPOP3 to use a different TCP/IP port number.

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

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 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.

Make VPOP3 retry outgoing messages immediately

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

Make VPOP3 retry outgoing messages immediately If VPOP3 has a temporary problem sending a message it will retry it later. When it will retry it depends on how many times it has already tried to send it, and is based on the 'Sender Retry' setting in the Mail Connectors

How to configure Mozilla Thunderbird

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

How to configure Mozilla Thunderbird This article won't show you all the possible settings in Thunderbird, because there are so many. Thunderbird is one of the most powerful & flexible email clients available at the time of writing, especially if you use IMAP4 (with VPOP3 Enterprise).

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

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

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.

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

Restricting the number of recipients sent to

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

Restricting the number of recipients sent to Some ISPs set restrictions on the number of recipients that you are allowed to send in a certain time period, eg 50 messages per hour, or the number of recipients that you are allowed to send per message or per connection.

Restricting the number of messages sent

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

Restricting the number of messages sent Some ISPs set restrictions on the number of messages that you are allowed to send in a certain time period, eg 50 messages per hour, or the number of messages that you are allowed to send per connection. Restriction of messages per connection

Sending mail through your Gmail account

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

Sending mail through your Gmail account According to Google, the settings for sending mail through Gmail are: Outgoing Mail (SMTP) Server - requires TLS or SSL: smtp.gmail.com (use authentication) Use Authentication: Yes Port for TLS/STARTTLS: 587 Port for SSL: 465

Sharing IMAP4 folders

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

Sharing IMAP4 folders Some email clients will allow you to share IMAP4 folders from within the client itself (eg eM Client) or have plugins to allow this (eg Mozilla Thunderbird with the Imap-ACL extension). In that case, you will need to see the documentation for that to set up sharing.

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

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 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

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 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.