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Date: Fri, 10 Oct 2003 09:27:47 -0300
From: "Alexandre Sieira" <alexandre.sieira@...hertech.com.br>
To: <popa3d-users@...ts.openwall.com>
Subject: RE: Premature disconnects with Outlook
Good morning, Alexander.
We are using the fully patched Outlook 2002 (10.4712.4219) SP-2, and
Outlook Express 6.00.2800.1123. In the process of trying to identify the
source of the problem, though, we tried using different programs to rule out
a client bug, especially since we use Outlook. :-)
popa3d is running on a fully patched Red Hat Linux 7.3 with kernel
2.4.20-20.7.
The network topology involved is pretty straightforward: a 100
Ethernet LAN with a vanilla switch and a direct connection from the server
to the workstations. No NAT involved.
As far as Norton Antivirus goes, disabling it does solve the
problem. However:
a) Using other clients such as Eudora with Norton Antivirus enabled works
fine.
b) Using Outlook and Outlook Express with other external pop daemons with
Norton Antivirus enabled works fine.
c) Disabling Norton Antivirus is not really a choice for us, for security
reasons.
After gathering these facts, it seems to be a problem with the
specific combination: Outlook + Norton Antivirus + popa3d.
I hope that helps in describing our problem.
Thanks for the quick response.
---
Alexandre Sieira, CISSP
Cipher Technology
(21) 2529-2629
> -----Original Message-----
> From: Solar Designer [mailto:solar@...nwall.com]
> Sent: quinta-feira, 9 de outubro de 2003 22:15
> To: popa3d-users@...ts.openwall.com;
> alexandre.sieira@...hertech.com.br
> Subject: Re: Premature disconnects with Outlook
>
>
> On Tue, Oct 07, 2003 at 04:20:06PM -0300, Alexandre Sieira wrote:
> > I?m having some trouble with my popa3d (version 0.6.3)
> server. Clients
> > who use Outlook to check their mail get some odd timeouts,
> reported as
> > "premature disconnect" by popa3d. A sample output from the log file
> > follows:
> >
> > Oct 7 09:57:13 mail popa3d[24397]: Authentication passed for userA
> > Oct 7 09:57:13 mail popa3d[24397]: 0 messages (0 bytes)
> loaded Oct 7
> > 09:57:18 mail popa3d[24397]: 0 (0) deleted, 0 (0) left Oct
> 7 09:58:16
> > mail popa3d[24399]: Authentication passed for userB Oct 7 09:58:16
> > mail popa3d[24399]: 0 messages (0 bytes) loaded Oct 7
> 09:58:56 mail
> > popa3d[24401]: Authentication passed for userA Oct 7 09:58:56 mail
> > popa3d[24401]: 0 messages (0 bytes) loaded Oct 7 09:59:16 mail
> > popa3d[24399]: Premature disconnect Oct 7 09:59:57 mail
> > popa3d[24401]: Premature disconnect
>
> > This odd behavior only happens when using Outlook
> 2002 SP-2 or
> > Outlook Express.
>
> What version of Outlook Express?
>
> What OS are you running popa3d on? What network equipment is
> being used? Is NAT involved?
>
> > I am also using Norton SystemWorks 2002 (version 2002.05)
> > to scan incoming and outgoing e-mail messages.
>
> Does it plug between POP3 clients and the POP3 server? If
> so, then it's very likely where your problem is.
>
> Can you try disabling it?
>
> > I don?t think that?s a
> > factor, tough, since everything works fine when using other
> clients,
> > such as Eudora or sylpheed.
>
> That doesn't say much.
>
> --
> Alexander Peslyak <solar@...nwall.com>
> GPG key ID: B35D3598 fp: 6429 0D7E F130 C13E C929 6447 73C3
> A290 B35D 3598 http://www.openwall.com - bringing security
> into open computing environments
>
>
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