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======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 [[not working as expected]] page.

Note that many error messages are from your Internet provider, and are just being reported by VPOP3 - in that case you should contact your Internet provider for help. Other error messages contain descriptive text to try to help.

  * [[Avast Error codes]]

  *[[Database Backup Failed]]
  *[[POP3 Client Connection Problem]]
  *[[POP3 Client Problem]]
  *[[SMTP Client Connection Problem]]
  *[[SMTP Client Problem]]
  *[[-ERR Can't open the message file - it's gone!]]
  *[[-ERR Mailbox Locked]]
  *[[-ERR Password supplied for "xx" is incorrect]]
  *[[-ERR Unknown User]]
  *[[1068 - the dependency service or group failed to start]]
  *[[1069 - login failure - error when starting VPOP3DB service]]
  *[[1348 - The validation information class requested was invalid - error when VPOP3 tries to access a NAS/file server]]
  *[[10047]]
  *[[10048]]
  *[[10049]]
  *[[10053]]
  *[[10054]]
  *[[10055]]
  *[[10060]]
  *[[10061]]
  *[[10503]]
  *[[11001]]
  *[[11002]]
  *[[11004]]
  *[[421 4.3.2 VPOP3 SMTP Server access disabled - low memory!]]
  *[[421 4.3.2 VPOP3 SMTP Server access disabled - content scanner problem!]]
  *[[421 4.3.2 VPOP3 Too many connections from your IP address - try later]]
  *[[450 4.3.2 Content Filter Timeout]]
  *[[550 Not permitted]] or 553 error from BT's mail servers
  *[[535 Authentication Failed]]
  *[[550 5.7.1 Unable to relay for...]]
  *[[552 5.2.3 Message too large - contact your administrator]]
  *[[552 5.2.3 Message too large - contact your administrator|552 5.2.3 Message exceeds fixed maximum message size]]
  *[[550 5.7.1 Relaying not allowed! Bad sender IP address]]
  *[[550 5.7.1 Recipient Prohibited (x)]]
  *[[AutoUpdate process failed with error code 786432]]
  *[[C++ Error popup]]
  *[[Data stream contained NUL character]]
  *[[Error Creating Service Entry (VPOP) - 5]] while running VPOP3SVC or installing VPOP3
  *[[Error expanding recipient - Nesting Level too deep]]
  *[[Error message after sending RCPTTO - error 0 - text 550 5.7.1 Relaying not allowed! Bad sender IP address]]
  *[[Exceptions]]
  *[[LAN Forward Warning - 452 (4.3.1 Insufficient system resources)]]
  *[[MX Send Warning - ...]]
  *[[No Transport Provider is Available]]
  *[[Invalid HELO name]]
  *[[Out of Disk Space When Sending Mail]]
  *[[Router Problem]]
  *[[Sender Domain Must Resolve]]
  *[[The message could not be loaded. Please return to the Quarantine page and try again]] when trying to view a quarantined message.
  *[[Timeout Problems When Sending or Receiving Attachments]]
  *[[Too many logins]]
  *[[Transmission Receipt]]
  *[[VPOP3 Alert - Non-existent user]]
  *[[VPOP3 Antivirus Update Error - Error 55]]
  *[[VPOP3 cannot access PostgreSQL - timeout expired]]
  *[[VPOP3 Historical Logger Backlog]]
  *[[VPOP3 xxxxx Server Access Not Allowed]]
  *[[VPOP3 xxxxx Server Access Not Allowed - See your administrator]]
  *[[VPOP3 does not have write access to the registry -  please check and restart VPOP3]]
  *[[Your connection has been blocked temporarily - Try again later]]
=====WebMail error=====
  *[[Error sending message after authentication|Error sending message after authentication - error 0 - text 502 Error: command not implemented]] 

=====Outlook error=====
Note that Outlook is not our software, and there are many errors which Outlook will generate which are nothing to do with the VPOP3 server, so these entries are here purely for convenience.
  * [[Error 0x80040201 when sending mail in Outlook]]
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