[Dovecot] Strange Login / Timeout Sessions

Tue Dec 20 07:36:53 EET 2011

On 16.12.2011, at 18.15, Carlos Mennens wrote:

> I have my webmail application tied to Postfix / Dovecot server & now
> for some reason the IMAP sessions oddly time out throughout the day
> and then logging back into the mail system over the web is painfully
> slow. The only thing I've seen that fixes it is to reload the Dovecot
> daemon in Linux:
..
> I'm running Dovecot-1.0.7-7.el5_7.1.

That's rather old. Might get solved simply by upgrading. You could try if using high-performance mode of login processes helps: http://wiki.dovecot.org/LoginProcess

Another reason might be your PAM setup.