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Re: smtp keep-alive message possibility

To: qmail@list.cr.yp.to
Subject: Re: smtp keep-alive message possibility
From: Jason Haar <Jason.Haar@trimble.co.nz>
Date: Wed, 13 Dec 2006 11:40:20 +1300
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d tbsky wrote:
> hi:
>   some of our users now use outlook 2003. the smtp session
> idle timeout default is 60 seconds for outlook 2003 and 2007.
>
> we use qmail-scanner and clamav for virus scans.  it would
> take about 70 seconds to scan a 15 MB email. so the outlook
> 2003/2007 think  smtp-timeout  when clamav is working.
> outlook disconnect and try send the mail again in a few minutes.
> but qmail think the mail is ok, so it deliver the mail to user.
>

Have you read the Qmail-Scanner FAQ? Especially the bit that says:

"SMTP clients hang when sending messages to Qmail-Scanner"

Basically you will need to speed up your mail processing so that this
out-of-your-control Outlook problem doesn't occur. Bigger servers,
faster AV, or run a "raw" Qmail SMTP server for your users - and relay
that mail to the real Qmail-Scanner server. Can be done on the same
server, etc, etc.

-- 
Cheers

Jason Haar
Information Security Manager, Trimble Navigation Ltd.
Phone: +64 3 9635 377 Fax: +64 3 9635 417
PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1


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