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Error message: VPOP3 Alert - Non-existent user - <username>

If you receive an error message like:

Subject: VPOP3 Alert - Non-existent user - <username>

Delivery Failure Report.
There was incoming mail for non-existent user "<username>".

This means that VPOP3 downloaded a message using POP3 and it was addressed to an email address which does not exist.

For instance, if a downloaded message had a header containing:


then VPOP3 will look for a Mapping, User or List called 'bob'. If it can't find one, then it will generate this error message.

how_to/vpop3_alert_-_non-existent_user.txt · Last modified: 2018/11/14 10:45 (external edit)