[Dovecot] 2.0.5 Error: Timeout waiting for handshake from auth server.

[Veiko Kukk]

Hello,

Upgraded from 1.2.x to 2.0.5, converted configuration as described in 
http://wiki2.dovecot.org/Upgrading/2.0 and now I'm unable to log in to 
imap server. Dovecot error.log shows:

Oct 21 09:52:48 imap-login: Error: Timeout waiting for handshake from 
auth server. my pid=13338, input bytes=0
Oct 21 09:52:48 imap-login: Error: Timeout waiting for handshake from 
auth server. my pid=13364, input bytes=0
Oct 21 09:52:48 imap-login: Error: Timeout waiting for handshake from 
auth server. my pid=13337, input bytes=0
Oct 21 09:52:48 imap-login: Error: Timeout waiting for handshake from 
auth server. my pid=13350, input bytes=0
Oct 21 09:52:48 imap-login: Error: Timeout waiting for handshake from 
auth server. my pid=13335, input bytes=0
Oct 21 09:52:48 imap-login: Error: Timeout waiting for handshake from 
auth server. my pid=13360, input bytes=0

I'm using pam with winbind for authentication.

/etc/pam.d/dovecot contains:

auth	required pam_winbind.so
account	sufficient pam_winbind.so

And it used to work perfectly with 1.1 and 1.2 series of dovecot.

What could be the problem with 2.0.5?

-- 
Veiko