[sclug] duplicate mail

Dickon Hood sclug at splurge.fluff.org
Thu Jun 28 09:08:30 UTC 2007

On Thu, Jun 28, 2007 at 09:47:39 +0100, Alex Butcher wrote:
: On Wed, 27 Jun 2007, Dickon Hood wrote:
: >On Wed, Jun 27, 2007 at 18:22:21 +0100, Jonathan H N Chin wrote:
: >: Dickon Hood <sclug at splurge.fluff.org> wrote:
: >: > On Wed, Jun 27, 2007 at 10:13:05 +0100, Darren Davison wrote:
: >: > : does anyone know why I might be receiving duplicate copies of most 
: >(but not
: >: > : all) sclug list mail? [...]
: >: > It's a bug in Tom's mail setup, from what I can tell.  I've no idea 
: >what
: >: > or why, but this is the only list to reliably and repeatedly duplicate
: >: > mail.

: >: It is probably just because most people are too lazy to clean up
: >: the To: and Cc: headers.

: >It isn't.

: [snip]

: >No, the mailing list server is duplicating deliveries.  This is clear from
: >the headers.

: In that case, it's probably an interaction between your mail path and the
: list mailserver; something in your path is taking too long to say that it's
: accepted the first copy of the message, the list mailserver thinks the
: connection got abandoned and sends another copy (arguably without giving the
: original a fair chance).

Indeed.  AIUI the list server is at the wrong end of an ADSL line, which
certainly isn't helping.

As I say, this is the only list I have issues with.  The other mailing
lists I subscribe to, which are responsible for a couple of hundred emails
a day, all following the same path, do not have this problem.

Mail flows from the end user, to the mailing list machine, to a
Blackcat-hosted virtual machine (unloaded), to my own colo machine
(unloaded), and is delivered to my mailbox there.  I read it on-spool
using mutt.

Now, I don't know if Zen are doing something interesting with outbound
port 25 (if I was running a medium-to-large consumer-level ISP I certainly
would), but something appears to be causing vigra.tmdg.co.uk
([] helo=wallis.weardale.cl) to redeliver.

Dickon Hood

Due to digital rights management, my .sig is temporarily unavailable.
Normal service will be resumed as soon as possible.  We apologise for the
inconvenience in the meantime.

No virus was found in this outgoing message as I didn't bother looking.

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