[Dovecot] Dovecot ldap connection reconnecting after inactivity

[Timo Sirainen]

On Tue, 2010-11-16 at 20:48 -0400, Aliet Santiesteban Sifontes wrote:
> Hi people, I have a setup configured using ldap, I have noticed that after a
> period of user inactivity if a client open connections to dovecot first
> attemps fails with this:
> 
> Nov 16 19:34:43 cl05-02 dovecot: auth: Error:
> ldap(user at xxx.xx.xx,172.29.13.26):
> Connection appears to be hanging, reconnecting
> 
> After the connections to ldap has been restablished everything starts
> working ok, is this a expected behavior or I'm missing something??

You have a firewall or something that drops the connection after it has
been idling for a while. And when Dovecot continues trying to send
another LDAP request, it simply drops the packets instead of even
bothering to reject them. Not good.