Re: regarding duplicate messages
On Thu, 17 Jan 2002, dman wrote:
> Regarding duplicate messages on debian-user, here is the relevant
> portion of the headers from a recent one :
>
> ~~~~~~~~~~~~~~~~~~~~
> Received: from murphy.debian.org ([216.234.231.6]) by ritvax.isc.rit.edu
> (PMDF V5.2-32 #40294) with SMTP id <01KD56M853IKDHPV6O@ritvax.isc.rit.edu>
> for dsh8290@ritvax.isc.rit.edu (ORCPT rfc822;dsh8290@rit.edu);
> Wed, 16 Jan 2002 15:25:34 -0500 (EST)
> Received: (qmail 6608 invoked by uid 38); Wed, 16 Jan 2002 20:13:00 +0000
> Received: (qmail 6118 invoked from network); Wed, 16 Jan 2002 20:12:51 +0000
> Received: from unknown (HELO imail.imaginet.co.za) (196.15.145.6) by
> murphy.debian.org with SMTP; Wed, 16 Jan 2002 20:12:51 +0000
> ~~~~~~~~~~~~~~~~~~~~
>
> ~~~~~~~~~~~~~~~~~~~~
> Received: from murphy.debian.org ([216.234.231.6]) by ritvax.isc.rit.edu
> (PMDF V5.2-32 #40294) with SMTP id <01KD57PF53WYDGHXNB@ritvax.isc.rit.edu>
> for dsh8290@ritvax.isc.rit.edu (ORCPT rfc822;dsh8290@rit.edu);
> Wed, 16 Jan 2002 15:57:10 -0500 (EST)
> Received: (qmail 6608 invoked by uid 38); Wed, 16 Jan 2002 20:13:00 +0000
> Received: (qmail 6118 invoked from network); Wed, 16 Jan 2002 20:12:51 +0000
> Received: from unknown (HELO imail.imaginet.co.za) (196.15.145.6) by
> murphy.debian.org with SMTP; Wed, 16 Jan 2002 20:12:51 +0000
> ~~~~~~~~~~~~~~~~~~~~
>
> Everything is identical up to the point that murphy.d.o transfers the
> message to my school's MX handler. It seems that murphy is the one
> causing the duplicates. Too bad qmail doesn't provide more
> information.
All the information is there.
In smtp, duplicates are possible, if other end cuts the connection early
without confirming the transfer. Usually this happens with hosts behind
slow connections.
--
"And if the messenger would shoot first?"
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