[Dovecot] Problems with the IMAP proxy after upgrading from dovecot 1.1.16 to 1.211

[Timo Sirainen]

On pe, 2010-05-07 at 15:35 +0200, Holger Richter wrote:

> May  7 14:47:42 ttt dovecot: auth(default):  worker-server(uid,yyy.yyy.yyy.yyy): Aborted: Lookup timed out
> May  7 14:47:42 ttt dovecot: auth-worker(default): mysql: Connected to  
> lll.lll.lll.lll (imapauth) 

"Lookup timed out" really shouldn't be happening.. That sounds like
Dovecot's MySQL connections hangs after a while? You have some stateful
firewall between Dovecot and MySQL that drops idling connections and
afterwards starts dropping the connection's packets?