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    <item rdf:about="https://wiki.pscs.co.uk/how_to:v3_-_move_to_a_new_pc?rev=1573574948&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2019-11-12T16:09:08+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Move VPOP3 Version 3 or 4 to a new PC</title>
        <link>https://wiki.pscs.co.uk/how_to:v3_-_move_to_a_new_pc?rev=1573574948&amp;do=diff</link>
        <description>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</description>
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    <item rdf:about="https://wiki.pscs.co.uk/how_to:10054?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Socket Error 10054 - The virtual circuit was reset by the remote end</title>
        <link>https://wiki.pscs.co.uk/how_to:10054?rev=1542192349&amp;do=diff</link>
        <description>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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:installation_conflicts?rev=1542192349&amp;do=diff">
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        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Installation conficts</title>
        <link>https://wiki.pscs.co.uk/how_to:installation_conflicts?rev=1542192349&amp;do=diff</link>
        <description>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.</description>
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        <dc:date>2019-11-12T16:06:44+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How To Move VPOP3 Version 2 to a New PC</title>
        <link>https://wiki.pscs.co.uk/how_to:v2_-_move_to_a_new_pc?rev=1573574804&amp;do=diff</link>
        <description>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 &#039;Program Files&#039; folder on the new PC. Recent versions of Windows have special protection for those folders, which is not compatible with VPOP3)</description>
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    <item rdf:about="https://wiki.pscs.co.uk/how_to:backup_vpop3?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to Backup VPOP3</title>
        <link>https://wiki.pscs.co.uk/how_to:backup_vpop3?rev=1542192349&amp;do=diff</link>
        <description>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&#039;s backup, DBBACK-1.DMP is Monday&#039;s backup, etc).</description>
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    <item rdf:about="https://wiki.pscs.co.uk/how_to:v3_-_move_to_a_new_folder?rev=1544023541&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-12-05T15:25:41+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to move VPOP3 V3 to a new folder</title>
        <link>https://wiki.pscs.co.uk/how_to:v3_-_move_to_a_new_folder?rev=1544023541&amp;do=diff</link>
        <description>How to move VPOP3 V3 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 PostgreSQL
	*  Remove the PostgreSQL service
	*  Move VPOP3 to the new folder</description>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Timeout problems downloading/uploading messages with attachments</title>
        <link>https://wiki.pscs.co.uk/how_to:timeout_problems_when_sending_or_receiving_attachments?rev=1542192349&amp;do=diff</link>
        <description>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&#039;t mean the problem is being caused by VPOP3.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:10048?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Socket Error 10048 - Specified Address Already in Use</title>
        <link>https://wiki.pscs.co.uk/how_to:10048?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:10053?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Socket Error 10053 - An established connection was aborted by the software in your host machine.</title>
        <link>https://wiki.pscs.co.uk/how_to:10053?rev=1542192349&amp;do=diff</link>
        <description>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:</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:10061?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Socket Error 10061 - The attempt to connect was forcefully rejected</title>
        <link>https://wiki.pscs.co.uk/how_to:10061?rev=1542192349&amp;do=diff</link>
        <description>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:</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:10503?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Socket Error 10503 - No More Data</title>
        <link>https://wiki.pscs.co.uk/how_to:10503?rev=1542192349&amp;do=diff</link>
        <description>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&#039;s POP3 server uses an obsolete standard which allows it to drop the connection if a POP3 &#039;LIST&#039; command is performed on an empty mailbox. The current standard requires that the connection is not dropped until the clien…</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:allow_remote_access_to_vpop3_mailboxes?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Allow Remote Access to VPOP3 Mailboxes</title>
        <link>https://wiki.pscs.co.uk/how_to:allow_remote_access_to_vpop3_mailboxes?rev=1542192349&amp;do=diff</link>
        <description>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&#039;t have a permanent Internet connection, see</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:message_downloads_not_completing?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Message Downloads Not Completing</title>
        <link>https://wiki.pscs.co.uk/how_to:message_downloads_not_completing?rev=1542192349&amp;do=diff</link>
        <description>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. &#039;avast! for VPOP3&#039; or &#039;Sophos SAV Interface&#039;). Usually that will solve the problem.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:create_an_ssl_certificate?rev=1774261123&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-03-23T10:18:43+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to create an SSL Certificate</title>
        <link>https://wiki.pscs.co.uk/how_to:create_an_ssl_certificate?rev=1774261123&amp;do=diff</link>
        <description>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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:encore_32_estate_agent_software?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to configure Encore 32 Estate Agent Software</title>
        <link>https://wiki.pscs.co.uk/how_to:encore_32_estate_agent_software?rev=1542192349&amp;do=diff</link>
        <description>How to configure Encore 32 Estate Agent Software

	*  Close down the Encore software
	*  Open up the “Maintenance 32” program
	*  Click on “Email Configuration”
	*  Enter the IP address of the VPOP3 computer into the “SMTP Server address”</description>
    </item>
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        <dc:date>2026-04-06T17:59:47+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Mail Not Downloading From ISP</title>
        <link>https://wiki.pscs.co.uk/how_to:mail_not_downloading_from_isp?rev=1775498387&amp;do=diff</link>
        <description>Mail Not Downloading From ISP

This normally happens because you have told VPOP3 to Leave Messages On Server (on the Mail Connectors -&gt; Mail Collectors -&gt; (name) -&gt; POP3 General tab). If you do this, VPOP3 will leave messages on the ISP&#039;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&#039;t download them again.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:upgrade_vpop3?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How To Upgrade VPOP3</title>
        <link>https://wiki.pscs.co.uk/how_to:upgrade_vpop3?rev=1542192349&amp;do=diff</link>
        <description>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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:vpop3_does_not_have_write_access_to_the_registry_-_please_check_and_restart_vpop3?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Error message: VPOP3 does not have write access to the registry - please check and restart VPOP3</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3_does_not_have_write_access_to_the_registry_-_please_check_and_restart_vpop3?rev=1542192349&amp;do=diff</link>
        <description>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 &#039;Local System&#039; 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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:your_connection_has_been_blocked_temporarily_-_try_again_later?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Error message: Your connection has been blocked temporarily - Try again later</title>
        <link>https://wiki.pscs.co.uk/how_to:your_connection_has_been_blocked_temporarily_-_try_again_later?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:10055?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Socket Error 10055 - No Buffer Space Available</title>
        <link>https://wiki.pscs.co.uk/how_to:10055?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:how_to?rev=1773865250&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-03-18T20:20:50+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>&quot;How To&quot; Articles</title>
        <link>https://wiki.pscs.co.uk/how_to:how_to?rev=1773865250&amp;do=diff</link>
        <description>&quot;How To&quot; Articles

Installation/Upgrades

	*  Download VPOP3
	*  Install VPOP3
	*  Move VPOP3
	*  Upgrade VPOP3
	*  Upgrade VPOP3 to version 5.x or 6.x from version 4 or earlier
	*  Upgrade VPOP3 to version 7.x from version 6 or earlier
	*  Upgrade VPOP3 to version 8.x from version 7 or earlier 
	*  Upgrade VPOP3 to version 9 or later from version 7 or 8
	*  Performance Requirements
	*  Installation Checklist

General Configuration

	*  Initial Configuration
	*  Users
	*  Add an Alias
	*  Create…</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:install_vpop3?rev=1615200520&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2021-03-08T10:48:40+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to Install VPOP3</title>
        <link>https://wiki.pscs.co.uk/how_to:install_vpop3?rev=1615200520&amp;do=diff</link>
        <description>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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:installing_postgresql_database_on_another_port?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to install PostgreSQL to use another port</title>
        <link>https://wiki.pscs.co.uk/how_to:installing_postgresql_database_on_another_port?rev=1542192349&amp;do=diff</link>
        <description>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&#039;t/don&#039;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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:out_of_disk_space_when_sending_mail?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Out of Disk Space When Sending Mail</title>
        <link>https://wiki.pscs.co.uk/how_to:out_of_disk_space_when_sending_mail?rev=1542192349&amp;do=diff</link>
        <description>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!</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:sender_policy_framework?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Sender Policy Framework / SPF</title>
        <link>https://wiki.pscs.co.uk/how_to:sender_policy_framework?rev=1542192349&amp;do=diff</link>
        <description>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 &#039;spoofing&#039; 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&#039;t come from an authorised IP address.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:software_conflicting_with_database?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Software conflicting with database service</title>
        <link>https://wiki.pscs.co.uk/how_to:software_conflicting_with_database?rev=1542192349&amp;do=diff</link>
        <description>Software conflicting with database service

We strongly recommend that virus scanners exclude the VPOP3\pgsql\data folder and all subfolders. If a virus scanner decides to quarantine a file from within this folder structure, that can cause VPOP3 not to run, and could lead to data loss or corruption.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:upgrading_database_software?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Upgrading PostgreSQL Database Software</title>
        <link>https://wiki.pscs.co.uk/how_to:upgrading_database_software?rev=1542192349&amp;do=diff</link>
        <description>Upgrading PostgreSQL Database Software

To upgrade the PostgreSQL database software used by VPOP3

	*  stop VPOP3
	*  backup the database (&lt;http://wiki.pscs.co.uk/how_to;backup_vpop3#manual_database_backup1&gt;)
	*  uninstall PostgreSQL (from within Windows) if necessary
	*  rename the VPOP3\pgsql folder to something else</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:using_a_mobile_phone_with_vpop3?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Using a Mobile Phone with VPOP3</title>
        <link>https://wiki.pscs.co.uk/how_to:using_a_mobile_phone_with_vpop3?rev=1542192349&amp;do=diff</link>
        <description>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:</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:vpop3_2.x_crashes_when_user_tries_to_download_mail?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>VPOP3 2.x crashes when user tries to download mail</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3_2.x_crashes_when_user_tries_to_download_mail?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:vpop3_is_responding_slowly?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>VPOP3 Is Responding Slowly</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3_is_responding_slowly?rev=1542192349&amp;do=diff</link>
        <description>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&#039;t need defragmenting even if it does, so it is best to do it anyway. Also, there is a better free defragmenter available called</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:vpop3_status_monitor_problems?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>VPOP3 Status Monitor Problems</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3_status_monitor_problems?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:550_5.7.1_unable_to_relay_for?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>550 5.7.1 Unable to Relay for...</title>
        <link>https://wiki.pscs.co.uk/how_to:550_5.7.1_unable_to_relay_for?rev=1542192349&amp;do=diff</link>
        <description>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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:allowing_mail_relay_through_vpop3?rev=1747814238&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2025-05-21T07:57:18+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How To Allow Mail Relay Through VPOP3</title>
        <link>https://wiki.pscs.co.uk/how_to:allowing_mail_relay_through_vpop3?rev=1747814238&amp;do=diff</link>
        <description>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&#039;t know who that user is. This can cause a problem if unauthorised users try to send mail through…</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:changing_a_user_s_password?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Changing a user&#039;s password</title>
        <link>https://wiki.pscs.co.uk/how_to:changing_a_user_s_password?rev=1542192349&amp;do=diff</link>
        <description>Changing a user&#039;s password

To change a user&#039;s password in VPOP3, you should log into the VPOP3 settings, go to the &#039;Users&#039; 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&#039;s settings. Go to the &#039;Passwords&#039; tab where you can set the passwords.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:configure_a_router_to_allow_incoming_smtp?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Accepting Incoming SMTP through a router</title>
        <link>https://wiki.pscs.co.uk/how_to:configure_a_router_to_allow_incoming_smtp?rev=1542192349&amp;do=diff</link>
        <description>Accepting Incoming SMTP through a router

If your ISP is providing you with an SMTP mail feed (incoming SMTP) and you have VPOP3 connecting to the ISP through a router then you will probably need to modify the router configuration to allow this.

Most routers&#039; default configuration will only allow outbound connections (ie connections from the local network out to the Internet). If you need to accept incoming SMTP mail, then you need to tell the router to allow inbound connections on port 25 for …</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:creating_extra_smtp_services?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Creating Extra SMTP Services</title>
        <link>https://wiki.pscs.co.uk/how_to:creating_extra_smtp_services?rev=1542192349&amp;do=diff</link>
        <description>Creating Extra SMTP Services

In VPOP3 Enterprise (not VPOP3 Basic) you can create multiple SMTP services. This can be useful if you want VPOP3 to listen on different ports and/or have different settings.

There are two ways of doing this.

Have a single SMTP service listening on multiple ports or IP addresses</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:database_issues?rev=1757595765&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2025-09-11T13:02:45+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Database Issues</title>
        <link>https://wiki.pscs.co.uk/how_to:database_issues?rev=1757595765&amp;do=diff</link>
        <description>Database Issues

VPOP3 version 3 and later use the PostgreSQL] database server. This is an open source enterprise level database server. Several VPOP3 problems are due to problems with the database service.

	*  Database &amp; Disk Caching
	*  Software conflicting with database
	*  VPOP3DB Service not starting
	*  Database Size

Database corruption

If VPOP3 won&#039;t start even though the process is running, then that is often because the PostgreSQL service is not running. If the PostgreSQL service won…</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:database_maintenance?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Database Maintenance</title>
        <link>https://wiki.pscs.co.uk/how_to:database_maintenance?rev=1542192349&amp;do=diff</link>
        <description>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…</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:delete_a_user?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to Delete a User</title>
        <link>https://wiki.pscs.co.uk/how_to:delete_a_user?rev=1542192349&amp;do=diff</link>
        <description>How to Delete a User

To delete a user from VPOP3, go to Users -&gt; 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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:email_-_fax?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to send a fax by email using the VPOP3 FaxServer</title>
        <link>https://wiki.pscs.co.uk/how_to:email_-_fax?rev=1542192349&amp;do=diff</link>
        <description>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@&lt;yourdomain&gt; . The email subject will be the subject of the fax used on the fax cover page. The email should be in plain text (not</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:error_creating_service_entry_vpop_-_5?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Error creating Service Entry (VPOP3) - 5</title>
        <link>https://wiki.pscs.co.uk/how_to:error_creating_service_entry_vpop_-_5?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:error_messages?rev=1759764097&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2025-10-06T15:21:37+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Error Messages</title>
        <link>https://wiki.pscs.co.uk/how_to:error_messages?rev=1759764097&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:installed_new_router_and_now_nothing_works?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>We installed a new router and now nothing works</title>
        <link>https://wiki.pscs.co.uk/how_to:installed_new_router_and_now_nothing_works?rev=1542192349&amp;do=diff</link>
        <description>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&#039;t seem to work afterwards. This is because it may be that the new router allocates new IP addresses on your network.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:postgresql_server_won_t_start_due_to_damaged_log_files?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>PostgreSQL server won&#039;t start due to damaged log files</title>
        <link>https://wiki.pscs.co.uk/how_to:postgresql_server_won_t_start_due_to_damaged_log_files?rev=1542192349&amp;do=diff</link>
        <description>PostgreSQL server won&#039;t start due to damaged log files

If the PostgreSQL server won&#039;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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:repairing_corrupted_database?rev=1705318545&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2024-01-15T11:35:45+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Repairing corrupted database</title>
        <link>https://wiki.pscs.co.uk/how_to:repairing_corrupted_database?rev=1705318545&amp;do=diff</link>
        <description>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&#039;t then there is no manual &#039;repair&#039; function, because the data cannot totally be recovered (or it would automatically have been recovered).</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:seeing_where_a_message_came_from?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Seeing where a message came from</title>
        <link>https://wiki.pscs.co.uk/how_to:seeing_where_a_message_came_from?rev=1542192349&amp;do=diff</link>
        <description>Seeing where a message came from

Sometimes you need to check to see where a message really came from. The &#039;From:&#039; 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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:status_service_disabled?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>VPOP3 Status Service Disabled</title>
        <link>https://wiki.pscs.co.uk/how_to:status_service_disabled?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:too_many_logins?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>&quot;Too many logins&quot; error message</title>
        <link>https://wiki.pscs.co.uk/how_to:too_many_logins?rev=1542192349&amp;do=diff</link>
        <description>&quot;Too many logins&quot; 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)</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:upgrade_vpop3_to_version_5?rev=1573227472&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2019-11-08T15:37:52+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How To Upgrade VPOP3 to version 5 or later</title>
        <link>https://wiki.pscs.co.uk/how_to:upgrade_vpop3_to_version_5?rev=1573227472&amp;do=diff</link>
        <description>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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:v3_-_move_message_store?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to move the VPOP3 Message Store to a new PC</title>
        <link>https://wiki.pscs.co.uk/how_to:v3_-_move_message_store?rev=1542192349&amp;do=diff</link>
        <description>How to move the VPOP3 Message Store to a new PC

Use this option if you want to have VPOP3 running on one PC, but have the message store database on another PC.

Manually Install PostgreSQL on the new PC

Download the &#039;pgInstaller&#039; version of PostgreSQL from the</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:v3_-_move_message_store_folder?rev=1544023524&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-12-05T15:25:24+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>v3/4 - Move the message store to a new folder/drive</title>
        <link>https://wiki.pscs.co.uk/how_to:v3_-_move_message_store_folder?rev=1544023524&amp;do=diff</link>
        <description>v3/4 - Move the message store to a new folder/drive

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.

	*  Stop VPOP3
	*  Stop PostgreSQL</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:vpop3_is_using_a_lot_of_disk_space?rev=1542192349&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2018-11-14T10:45:49+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>VPOP3 is using a lot of disk space</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3_is_using_a_lot_of_disk_space?rev=1542192349&amp;do=diff</link>
        <description>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&#039; messages are stored in the database, so they will occupy space in the VPOP3\pgsql\data folder.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:vpop3_re-downloading_old_messages_from_isp_pop3_server?rev=1767605507&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-01-05T09:31:47+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>VPOP3 re-downloading old messages from the ISP POP3 server</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3_re-downloading_old_messages_from_isp_pop3_server?rev=1767605507&amp;do=diff</link>
        <description>VPOP3 re-downloading old messages from the ISP POP3 server

If you tell VPOP3&#039;s POP3 mail collector to leave messages on the ISP&#039;s server for a few days,  you may find that sometimes VPOP3 will redownload all the messages from the ISP mailbox again.</description>
    </item>
</rdf:RDF>
