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.

• Database Backup Failed
• POP3 Client Connection Problem
• POP3 Client Problem
• SMTP Client Connection Problem
• SMTP Client Problem
• -ERR Mailbox Locked
• -ERR Password supplied for "xx" is incorrect
• -ERR Unknown User
• 1069 - login failure - error when starting VPOP3DB service
• 10047
• 10048
• 10049
• 10053
• 10054
• 10060
• 10061
• 10503
• 11001
• 11002
• 11004
• 550 Not permitted or 553 error from BT's mail servers
• 552 5.2.3 Message too large - contact your administrator
• 552 5.2.3 Message exceeds fixed maximum message size
• Error Creating Service Entry (VPOP) - 5 while running VPOP3SVC or installing
• 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
• Sender Domain Must Resolve
• Timeout Problems When Sending or Receiving Attachments
• Too many logins
• Transmission Receipt
• C++ Error popup
• 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

• Error sending message after authentication - error 0 - text 502 Error: command not implemented