[Dovecot] Outlook cant connect to POP server.

["Fábio M. Catunda"]

Hi,

I'm having a weir situation with MS Outlook and dovecot. I'm using POP 
for some users, some can connect, others cant.

With tcpdump I got this packet coming from client to server:

2008-03-31 18:30:20.913718 IP (tos 0x0, ttl 128, id 1082, offset 0, 
flags [DF], proto: TCP (6), length: 48) 192.168.12.9.1072 > 
192.168.5.124.110: S, cksum 0x90db (correct), 2564735473:2564735473(0) 
win 65535 <mss 1460,nop,nop,sackOK>
E..0.:@...c.... ...|.0.n........p...............

But the server never give an answer.

I don't have any idea why the server do not answer, in error.log and 
info.log I got nothing.

Dovecot version: 1.0.rc15-2etch3 (Debian package)

And those are the workarrounds that I enabled:
  pop3_client_workarounds = outlook-no-nuls oe-ns-eoh

I'm kind of lost, any tip is appreciated!

Thanks!