On Wed, 2010-11-17 at 21:17 +0100, Attila Nagy wrote:
pop3-login: Error: net_connect_unix(pop3) failed: Connection refused
Right. This is the main problem. So the question becomes why is the connection being refused.
I've checked, auth's start time is yesterday, so it wasn't restarted. I guess what remains is the resource limit (client_limit maybe?).
If that happens, there should be a log entry. You can grep process_limit and client_limit from logs.
The strange thing is according to tcpdump, dovecot does very few LDAP lookups, and they are answered in a reasonable time, but I haven't done a strict correlation with the above errors.
This shouldn't have anything to do with authentication.
How does dovecot logs timed out LDAP lookups?
"Connection appears to be hanging, reconnecting"
I usually log errors to a different log file. Normally that file should be empty, so you can easily see all the errors and warnings that could be causing problems.
log_path = /var/log/dovecot-errors.log info_log_path = /var/log/dovecot-info.log