Postfix removing domain from user names before passing to Dovecot for IMAP authentication
- by chernevik
In IMAP authentication with Dovecot, Postfix is stripping the domain name from virtual users who share a name with a local user, causing them to fail authentication. Virtual users without local accounts don't have this problem.
How can I prevent this? Failing an answer, how can I debug Postfix to see what's going on? I've turned on every debugging option I can get, and I'm not seeing anything helpful in the logs.