[Dovecot] Dovecot - T-Bird - RETR command failed

[Calvin Gordon]

This morning during another RETR command error in T-Bird i got the 
following info from the use/maildir/cur directory

[root at mailserver cur]# ls -lh

total 3.1M

-rw------- 1 username users 35K 2008-08-27 13:57 
1219867052.V811I47642dM988688.mailserver.company.com:2,S

-rw------- 1 username users 821 2008-08-27 14:17 
1219868229.V811I476525M88463.mailserver.company.com:2,

-rw------- 1 username users 20K 2008-08-27 19:01 
1219885307.V811I476533M802748.mailserver.company.com:2,

-rw------- 1 username users 50K 2008-08-27 19:05 
1219885504.V811I47654eM965583.mailserver.company.com:2,

-rw------- 1 username users 3.0K 2008-08-27 21:42 
1219894942.V811I47655aM486415.mailserver.company.com:2,

What is the "'S" behind the offending file name ?

What is the ",S" behind the offending filenane ?

I also did a head on the offending file (edited to protect the confused)

[root at mailserver cur]# head 
1219867052.V811I47642dM988688.mailserver.company.com:2\,S

Return-Path: <aprimo.americas.bounces at autodeskcommunications.com>

X-Original-To: firstname.lastname at company.com

Delivered-To: firstname.lastname at company.com

Received: from aprimo-relay2.autodesk.com (aprimo-relay2.autodesk.com 
[198.102.112.80])

by mailserver.company.com (Postfix) with ESMTP id 0B52C2D844B

for <firstname.lastname at company.com>; Wed, 27 Aug 2008 13:57:24 -0600 (CST)

Received: from APRPRDAPP04.ads.autodesk.com (aprprdapp04.autodesk.com 
[144.111.34.44])

by aprimo-relay2.autodesk.com (8.13.0/8.12.6) with ESMTP id m7RJvNvN006344

for <firstname.lastname at company.com>; Wed, 27 Aug 2008 12:57:24 -0700 (PDT)

Received: from mail pickup service by APRPRDAPP04.ads.autodesk.com with 
Microsoft SMTPSVC;


Cal G

Timo Sirainen wrote:
> On Tue, 2008-08-26 at 13:42 -0600, Calvin Gordon wrote:
>   
>> I have recently installed new untangle firewalls ( untangle.com) in 
>> Bridge mode at two office locations. Both offices collect mail from a 
>> Fedora 9, postfix,dovecot server at location #1. Since the install of 
>> the untangles i have been plagued by Thunderbird Errors while trying to 
>> POP email.
>>     
>
> That strongly implies the problem is with the new firewalls.
>
>   
>> Aug 26 13:58:41 mailserver dovecot: POP3(username): Connection closed 
>> top=0/0, retr=1/6987, del=0/1, size=6970
>>     
>
> Dovecot sees that the connection gets closed unexpectedly. Most likely
> by the firewall that was inspecting the POP3 traffic and found something
> it didn't like (or caused it to hit a bug or something).
>
> The problem probably goes away if you enable SSL. Or maybe you could
> configure the firewalls not to look inside the POP3 traffic.
>
>