dovecot auth question

a user keeps trying to check his e-mail but the server keeps disconnecting him.

here is what i could find in the logs


Jun 16 10:02:54 Rppt dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=robert rhost=192.168.2.223 user=robert




anyone know what might be preventing him from logging in, no other users have problems.

It seems like an authentication error; have the user give you their username & password, then see if it works for you (telnet into port 25; "Helo <x>"; "user robert"; "pass <pass>"). If the authentication fails, it's a bad password, if it succeeds, it's PEBKAC (on the user's side).

The user might actually be getting disconnected from the server, but you need to find out what the exact error is. A disconnection error is much different than an authentication error.