Deafness

I’ve started in the last day or so having issues where users get a timeout when connecting to dovecot.

The iPhone interprets this as an auth issue but re-entering the password makes no change.

Outlook will either just not connect to it at all or it gives an error to re-enter the password also with no change.

This happens within an hour of a "service dovecot restart".

I’m using CentOS 6 with dovecot 2.0.9 from the centos repos.

There’s nothing visible in the logs.

Suggestions of what to check for?

Thanks, Steffan