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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:restore_a_backup_of_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 Restore a backup of VPOP3</title>
        <link>https://wiki.pscs.co.uk/how_to:restore_a_backup_of_vpop3?rev=1542192349&amp;do=diff</link>
        <description>How to Restore a backup of VPOP3

The instructions below are to restore a full backup. You may also be able to recover deleted messages if you do not need to restore a full backup.

Version 5 or later

If you just need to restore a database backup, see steps 4 to 7 below.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:database_backups?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 -&gt; Backups Tab</title>
        <link>https://wiki.pscs.co.uk/reference:database_backups?rev=1542192349&amp;do=diff</link>
        <description>Database -&gt; Backups Tab

The Backups tab lets you specify how VPOP3 will make its daily backup of its database.

We strongly recommend that you backup the database regularly in case of disk problems or file corruption. You can use the VPOP3 backup feature, or manually backup the PostgreSQL database using the pg_dump command, or use another program to backup the PostgreSQL database if you wish. Note that a simple disk copy will</description>
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    <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>
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        <dc:format>text/html</dc:format>
        <dc:date>2022-11-18T11:43:52+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Restore Deleted Calendars</title>
        <link>https://wiki.pscs.co.uk/how_to:restore_deleted_calendars?rev=1668771832&amp;do=diff</link>
        <description>Restore Deleted Calendars

This article will help if a user has been deleted and all their calendars are lost and need to be restored. Note that this functionality is not built into VPOP3, and requires the use of Python3 to run a script

First you need to install Python 3.8 or later, and the psycopg2 plugin</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/reference:archive_offline?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 Archive -&gt; Offline Tab</title>
        <link>https://wiki.pscs.co.uk/reference:archive_offline?rev=1542192349&amp;do=diff</link>
        <description>Message Archive -&gt; Offline Tab

Settings -&gt; Message Archive -&gt; Offline Tab.

The Offline tab lets you tell VPOP3 to move old archived messages to an alternative store, such as CD/DVD or external drive etc. VPOP3 will create a ZIP file containing the old messages. The archive index will still remember the messages, and the name of the ZIP file they are contained in, so you will still be able to search for messages on date, sender, subject, etc, but not on the message content.</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>
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        <dc:format>text/html</dc:format>
        <dc:date>2025-12-17T09:19:40+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Restore a database backup</title>
        <link>https://wiki.pscs.co.uk/how_to:restore_a_database_backup?rev=1765963180&amp;do=diff</link>
        <description>Restore a database backup

By default VPOP3 makes a daily backup of the VPOP3 database to a file &#039;DBBACK-n.DMP&#039; 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&#039; worth of backups. These can be useful if the database gets damaged somehow.</description>
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    <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: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:upgrade_vpop3_to_version_7?rev=1593427438&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2020-06-29T10:43:58+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>How to upgrade VPOP3 to version 7 or later from version 6 or earlier</title>
        <link>https://wiki.pscs.co.uk/how_to:upgrade_vpop3_to_version_7?rev=1593427438&amp;do=diff</link>
        <description>How to upgrade VPOP3 to version 7 or later from version 6 or earlier

As usual the process to upgrade is simply to install the later version over your existing installation (do not uninstall anything first). The below is technical information detailing an extra step performed by the installer in this particular upgrade step.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:upgrade_vpop3_to_version_8?rev=1599145654&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2020-09-03T15:07:34+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Upgrading VPOP3 to version 8.x from v7 or earlier</title>
        <link>https://wiki.pscs.co.uk/how_to:upgrade_vpop3_to_version_8?rev=1599145654&amp;do=diff</link>
        <description>Upgrading VPOP3 to version 8.x from v7 or earlier

VPOP3 v8.x uses PostgreSQL 10 as its database engine, which is the latest supported 32 bit version of PostgreSQL. Later versions of PostgreSQL are 64-bit only, which means we cannot use them while continuing to support 32 bit versions of Windows.</description>
    </item>
    <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>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2026-04-21T11:12:40+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Move VPOP3 Version 5 (or later) to a new PC</title>
        <link>https://wiki.pscs.co.uk/how_to:v5_-_move_to_a_new_pc?rev=1776769960&amp;do=diff</link>
        <description>Move VPOP3 Version 5 (or later) to a new PC

Moving VPOP3 Version 5 or later to a new PC is slightly different from moving earlier versions, because of the database system, which was introduced for version 3 and modified for version 5.

The summary of steps is:

	*  Stop VPOP3 on the original PC</description>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2026-03-18T20:49:54+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Upgrading VPOP3 to version 9.x from v7 or v8</title>
        <link>https://wiki.pscs.co.uk/how_to:upgrade_vpop3_to_version_9?rev=1773866994&amp;do=diff</link>
        <description>Upgrading VPOP3 to version 9.x from v7 or v8

VPOP3 v9 and later requires a 64 bit version of Windows 8.1 or later 

VPOP3 v9.x uses PostgreSQL 18 as its database engine. This can only easily be upgraded from PostgreSQL 9.3 or later, which means it must be an upgrade of VPOP3 v7 or later. If you are using an earlier version of VPOP3, then upgrade it to v8.7 first, then upgrade to v9 or later</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:vpop3_not_starting_properly?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 Not Starting Properly</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3_not_starting_properly?rev=1542192349&amp;do=diff</link>
        <description>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&#039;t respond to anything, or it may appear in Task Manager and then stop after a short period.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:database_restore?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 -&gt; Restore Tab</title>
        <link>https://wiki.pscs.co.uk/reference:database_restore?rev=1542192349&amp;do=diff</link>
        <description>Database -&gt; 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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:database_backup_failed?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 Backup Failed</title>
        <link>https://wiki.pscs.co.uk/how_to:database_backup_failed?rev=1542192349&amp;do=diff</link>
        <description>Database Backup Failed

VPOP3 version 3 and later will, by default, make a backup of the database used by VPOP3 into a file. This uses the PostgreSQL utility &#039;pg_dump&#039;

If an error occurs whilst running this program, VPOP3 will create a &#039;Database Backup Failed&#039; error message to the administrator.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:total_rebuild_of_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>Total Rebuild of Database</title>
        <link>https://wiki.pscs.co.uk/how_to:total_rebuild_of_database?rev=1542192349&amp;do=diff</link>
        <description>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</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:batch_file_to_end_a_database_backup?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>Batch file to end a database backup</title>
        <link>https://wiki.pscs.co.uk/reference:batch_file_to_end_a_database_backup?rev=1542192349&amp;do=diff</link>
        <description>Batch file to end a database backup

VPOP3 runs pg_dump.exe to perform the regular database backups. Ending this process through Task Manager will not end the back-end database processes creating the backup data. This batch file will do it for you.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:message_archive?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 Archive</title>
        <link>https://wiki.pscs.co.uk/reference:message_archive?rev=1542192349&amp;do=diff</link>
        <description>Message Archive

The Message Archive facility is for VPOP3 to store copies of all messages sent or received. It stores the messages in a central archive store which can be searched by an administrator.
The prime purpose of the archive facility is for recording messages in case of possible disputes, as you can see what was sent/received by email. It can also be used as a backup/restore facility in an emergency, but that is not its prime purpose, so it is better to have a proper</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: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/faq:imap4?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>IMAP4 Mail Protocol</title>
        <link>https://wiki.pscs.co.uk/faq:imap4?rev=1542192349&amp;do=diff</link>
        <description>IMAP4 Mail Protocol

IMAP4 (Internet Mail Access Protocol version 4) is a more advanced protocol than POP3. With IMAP4 your mail is stored and manipulated on the mail server.

So, if you move a message from one folder to the other, the message is moved on the server. If you send a message, your mail client will (usually) put a copy into your &#039;Sent Items&#039; folder. If you delete a message, it is deleted from the server, and so on.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:move_the_message_store_-_alternative_method?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>Move the message store - alternative method</title>
        <link>https://wiki.pscs.co.uk/how_to:move_the_message_store_-_alternative_method?rev=1542192349&amp;do=diff</link>
        <description>Move the message store - alternative method

This method moves the database data storage location, but not the whole database. This means that the database configuration, logs, transaction logs etc are still stored in the VPOP3\pgsql\data folder, but the actual database tables &amp; indexes are stored in the new location. This may be simpler, but, depending on your requirements,</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:postgresql_replication?rev=1549473031&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2019-02-06T17:10:31+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>PostgreSQL Replication</title>
        <link>https://wiki.pscs.co.uk/how_to:postgresql_replication?rev=1549473031&amp;do=diff</link>
        <description>PostgreSQL Replication

PostgreSQL 9.1 (used in VPOP3 5 and later) supports replication from a &#039;Master&#039; to a &#039;Slave&#039; database server. This can be used with VPOP3 for having a near-realtime backup of your settings &amp; 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…</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:restore_folder_-_v5?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>Restore selected mail folders or mailbox in VPOP3 v5 or later</title>
        <link>https://wiki.pscs.co.uk/how_to:restore_folder_-_v5?rev=1542192349&amp;do=diff</link>
        <description>Restore selected mail folders or mailbox in VPOP3 v5 or later

(This option is only available in VPOP3 Enterprise)

First - if the problem is that messages were deleted very recently (the default is within 3 days), you can probably use the Undelete feature in VPOP3.</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: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: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:moving_messages?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 messages between users</title>
        <link>https://wiki.pscs.co.uk/how_to:moving_messages?rev=1542192349&amp;do=diff</link>
        <description>How to move messages between users

There are several ways to do this, depending on your exact needs

Via Administrator Console

You can view a user&#039;s &#039;Inbox&#039; messages by clicking on the message count on the Users list, then select the messages, choose the target user, and press the</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:pop3_client_problem?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 - POP3 Client Problem</title>
        <link>https://wiki.pscs.co.uk/how_to:pop3_client_problem?rev=1542192349&amp;do=diff</link>
        <description>VPOP3 - POP3 Client Problem

These errors occur whilst VPOP3 is communicating with your ISP&#039;s POP3 mail server to retrieve your mail.

The server connection was closed unexpectedly

If the message text is
Error with Pop3 Client (XXXX (YY))
The server connection was closed unexpectedly</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:restore_folder_v3?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>Restore a single user&#039;s mailbox or folder in v3 or v4</title>
        <link>https://wiki.pscs.co.uk/how_to:restore_folder_v3?rev=1542192349&amp;do=diff</link>
        <description>Restore a single user&#039;s mailbox or folder in v3 or v4

To restore a single user&#039;s Mailbox or folder is currently only possible in VPOP3 Enterprise, and requires a second PC to act as a temporary VPOP3 server.

You need to:

	*  Restore your latest VPOP3 backup to another PC (a temporary VPOP3 server)</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_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>
    <item rdf:about="https://wiki.pscs.co.uk/reference:database_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>Database -&gt; Message Store Tab</title>
        <link>https://wiki.pscs.co.uk/reference:database_message_store?rev=1542192349&amp;do=diff</link>
        <description>Database -&gt; Message Store Tab

This tab says how VPOP3 handles its message store

Message Store

The Delay while moving messages setting tells VPOP3 how quickly to import messages into the new database structure if it was upgraded from version 2.x or earlier. Usually this is OK to be left as it is, but if there is some special requirement to import the messages more quickly, you can decrease this number, but that will increase the load on the server.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:import_users_from_file?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>Import Users From File</title>
        <link>https://wiki.pscs.co.uk/reference:import_users_from_file?rev=1542192349&amp;do=diff</link>
        <description>Import Users From File

VPOP3 supports the importation and exportation of users, via a CSV file (see  for a specification of the CSV file format).

NOTE: This process is not designed to provide a complete backup of user data, nor is it intended to facilitate moving VPOP3 to a new computer. Instead, see the following relevant pages:</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:lua_scripting?rev=1774568941&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-03-26T23:49:01+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Lua Scripting</title>
        <link>https://wiki.pscs.co.uk/reference:lua_scripting?rev=1774568941&amp;do=diff</link>
        <description>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.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:msgaudit?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>msgaudit Database table</title>
        <link>https://wiki.pscs.co.uk/reference:msgaudit?rev=1542192349&amp;do=diff</link>
        <description>msgaudit Database table

This can (optionally) contain data showing how messages have been handled (eg deleted, moved, etc)

	*  id - incrementing ID of msgaudit entry
	*  datetime - the date &amp; time the event occurred
	*  component - which VPOP3 component performed the event</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:temporary_files?rev=1771523787&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-02-19T17:56:27+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Temporary Files</title>
        <link>https://wiki.pscs.co.uk/reference:temporary_files?rev=1771523787&amp;do=diff</link>
        <description>Temporary Files

This is for files in the VPOP3\_temp folder

Most of the filename is the hexadecimal timestamp (in Windows &#039;FILETIME&#039;/65536 form) with a 4 digit hex sequential number afterwards. The first letter or two (usually G-Z) can tell something about what caused the file.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/faq:gdpr_hosted_vpop3?rev=1760456581&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2025-10-14T15:43:01+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>GDPR for hosted VPOP3 service</title>
        <link>https://wiki.pscs.co.uk/faq:gdpr_hosted_vpop3?rev=1760456581&amp;do=diff</link>
        <description>GDPR for hosted VPOP3 service

(Since Brexit, the UK has “UK GDPR” instead of “EU GDPR”, so this document refers to UK GDPR)

Also see GDPR for VPOP3 as most of that applies to the VPOP3 hosting service as well.

This Data Processing Agreement is part of our hosted VPOP3 service terms. You can view the revision history by clicking on the &#039;clock&#039; icon to the right.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/faq:gdpr_other_hosting?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>GDPR for other hosting services (eg web hosting)</title>
        <link>https://wiki.pscs.co.uk/faq:gdpr_other_hosting?rev=1542192349&amp;do=diff</link>
        <description>GDPR for other hosting services (eg web hosting)

As a hosted service provider, we are classed as a “Data Processor” under the GDPR regulations.

For our hosting services:

	*  Data is held in the UK. Data is not transmitted outside of the EU except at your explicit request or command.</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:estimate_db_upgrade_time?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 estimate Database Upgrade Time</title>
        <link>https://wiki.pscs.co.uk/how_to:estimate_db_upgrade_time?rev=1542192349&amp;do=diff</link>
        <description>How to estimate Database Upgrade Time

When upgrading from VPOP3 version 3 or 4 to version 5, the PostgreSQL database engine needs to be upgraded. This involves backing up the database data, upgrading the database engine, then restoring the data. This can take some time on large databases.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:exceptions?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>Exceptions</title>
        <link>https://wiki.pscs.co.uk/how_to:exceptions?rev=1542192349&amp;do=diff</link>
        <description>Exceptions

An exception happens if VPOP3 encounters a problem it did not expect. In some cases it can recover automatically, but in other cases that isn&#039;t possible.

Common causes

VPOP3 2.6 and earlier

In VPOP3 2.6 and earlier it was quite common for there to be database corruption problems with the SQLite database which was used in those versions.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:incoming_smtp_feed?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>Incoming SMTP Feed</title>
        <link>https://wiki.pscs.co.uk/how_to:incoming_smtp_feed?rev=1542192349&amp;do=diff</link>
        <description>Incoming SMTP Feed

An incoming SMTP feed is where incoming mail is sent directly to your mail server without going through your ISP&#039;s POP3 mail server on the way. 

Advantages

An incoming SMTP feed has several advantages over going via a POP3 mailbox:</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/how_to:recovering_messages_from_corrupted_database_into_fresh_database?rev=1757598487&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2025-09-11T13:48:07+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Recovering messages from corrupted database into fresh database</title>
        <link>https://wiki.pscs.co.uk/how_to:recovering_messages_from_corrupted_database_into_fresh_database?rev=1757598487&amp;do=diff</link>
        <description>Recovering messages from corrupted database into fresh database

If the VPOP3 message database is corrupted, then one option is to build a fresh database and restore the settings into it, then recover the messages from the old database using the &#039;Message Restore&#039; function in VPOP3. This has minimal downtime, but old messages will not all be available until the restore has completed. New messages will be available quickly, and you will be able to send messages.</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:vpop3db_service_doesn_t_exist?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>VPOP3DB Service doesn&#039;t exist</title>
        <link>https://wiki.pscs.co.uk/how_to:vpop3db_service_doesn_t_exist?rev=1542192349&amp;do=diff</link>
        <description>VPOP3DB Service doesn&#039;t exist

If VPOP3 v3 or later won&#039;t start, and you find that the VPOP3DB (or PostgreSQL-VPOP3) service does not exist in the Windows Services list, it may be that you have just moved VPOP3 and made a mistake following the move procedure or something has removed the service for some reason.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:alter_lan_forwarding_queued_messages_going_to_one_server_to_go_to_another?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 query to alter LAN Forwarding rules for one server to go to another</title>
        <link>https://wiki.pscs.co.uk/reference:alter_lan_forwarding_queued_messages_going_to_one_server_to_go_to_another?rev=1542192349&amp;do=diff</link>
        <description>Database query to alter LAN Forwarding rules for one server to go to another

If a LAN forwarding destination server fails, you may wish to change the queued messages to go to the new server. (Note that, if planning ahead, it may be easier to use DNS</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:alter_lan_forwarding_rules_for_one_server_to_go_to_another?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 query to alter LAN Forwarding rules for one server to go to another</title>
        <link>https://wiki.pscs.co.uk/reference:alter_lan_forwarding_rules_for_one_server_to_go_to_another?rev=1542192349&amp;do=diff</link>
        <description>Database query to alter LAN Forwarding rules for one server to go to another

If a LAN forwarding destination server fails, you may wish to change the LAN forwarding rules to point to the new server. (Note that, if planning ahead, it may be easier to use</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:archive_general?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 Archive -&gt; General</title>
        <link>https://wiki.pscs.co.uk/reference:archive_general?rev=1542192349&amp;do=diff</link>
        <description>Message Archive -&gt; General

Settings -&gt; Message Archive -&gt; General Tab

Archive Messages

If the Archive Messages box is checked, then VPOP3 will archive incoming and outgoing messages.

Main Archive Store Directory

You can set the message archive store to any directory accessible by the VPOP3 service. Enter the path in the</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:database_files_used_in_vpop3_2.x?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 files used in VPOP3 2.x</title>
        <link>https://wiki.pscs.co.uk/reference:database_files_used_in_vpop3_2.x?rev=1542192349&amp;do=diff</link>
        <description>Database files used in VPOP3 2.x

VPOP3 2.x usually uses SQLite 2.8.3 as its database engine. This stores databases in discrete *.db files in the VPOP3\_database directory on the server PC. We do not recommend that you access these databases directly unless you know what you are doing, and we strongly discourage the alteration of data in the databases directly unless technical support request you to.</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:error_handling_script?rev=1700475481&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2023-11-20T10:18:01+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>Error Handling Scripting</title>
        <link>https://wiki.pscs.co.uk/reference:error_handling_script?rev=1700475481&amp;do=diff</link>
        <description>Error Handling Scripting

For most error messages that VPOP3 generates, it allows control of error messages, eg to limit the frequency of error messages if they would be generated repeatedly. These limits are set in Settings -&gt; Admin Settings -&gt; Message Control. However, if you want more granular control, you can use Lua scripting for more fine-grained control</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:logging?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>Logging</title>
        <link>https://wiki.pscs.co.uk/reference:logging?rev=1542192349&amp;do=diff</link>
        <description>Logging

Activity Summary Reports

You can tell VPOP3 to send you a daily summary report each day.

To do this check the box to say Send daily summary logs to, and choose the appropriate user (or “Main Administrator” if you want the reports to be sent to the</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/reference:useful_other_things?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>Useful other things</title>
        <link>https://wiki.pscs.co.uk/reference:useful_other_things?rev=1542192349&amp;do=diff</link>
        <description>Useful other things

Scripts/batch files/etc which may be useful

	*  batch file to end a database backup</description>
    </item>
    <item rdf:about="https://wiki.pscs.co.uk/wiki:dokuwiki?rev=1664623959&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2022-10-01T11:32:39+00:00</dc:date>
        <dc:creator>Anonymous (anonymous@undisclosed.example.com)</dc:creator>
        <title>DokuWiki</title>
        <link>https://wiki.pscs.co.uk/wiki:dokuwiki?rev=1664623959&amp;do=diff</link>
        <description>DokuWiki

wiki:dokuwiki DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn&#039;t require a database. It is loved by users for its clean and readable syntax. The ease of maintenance, backup and integration makes it an administrator&#039;s favorite. Built in</description>
    </item>
</rdf:RDF>
