On Tue, 2012-08-21 at 17:33 -0700, Gordon Messmer wrote:
> Rather than speculate about what may or may not be happening with the 
> user agent and the MTA, please locate those two messages and send a copy 
> of *all* of the Received: headers from each.  Send them to the list, 
> unmodified.  They should make the situation very clear.

Here they are, my friend.  *all* of the received headers, unmodified.
If you can find anything enlightening in them that neither I nor the
Mailman developers/list admins have found, I'll be forever in your
debt :)


First set:
----------
Received: from mail.python.org (mail.python.org [::ffff:82.94.164.166]) (TLS: 
TLSv1/SSLv3,256bits,AES256-SHA) by shakti.fmp.com with esmtp; Sun, 19 Aug 2012 
20:17:11 -0500 id 000000000027586D.0000000050319017.00007186
Received-spf: none (Address does not pass the Sender Policy Framework) 
SPF=HELO; sender=mail.python.org; remoteip=::ffff:82.94.164.166; 
remotehost=mail.python.org; helo=mail.python.org; receiver=shakti.fmp.com;
Received-spf: pass (Address passes the Sender Policy Framework) SPF=MAILFROM; 
sender=mailman-users-bounces+fmouse-mailman=fmp....@python.org; 
remoteip=::ffff:82.94.164.166; remotehost=mail.python.org; 
helo=mail.python.org; receiver=shakti.fmp.com;
Received: from albatross.python.org (localhost [127.0.0.1]) by mail.python.org 
(Postfix) with ESMTP id 3X0cYy4Y8HzQCS for <fmouse-mail...@fmp.com>; Mon, 20 
Aug 2012 03:17:10 +0200 (CEST)
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/simple; d=python.org; s=200901; 
t=1345425430; bh=SE4UwD4ISPf3jV+Q3YQCSAYQHFCFh60pIQB+YnYOazE=; 
h=From:To:In-Reply-To:References:Date:Message-ID:Mime-Version: 
Subject:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help: 
List-Subscribe:Content-Type:Content-Transfer-Encoding:Sender; 
b=HaYi6ZYAki+lsgcm4rd643rthkiEslpcywFMRhhMUAemDS7LCWDGibd+8stdHA0ZM 
V36dC0mdlNnt66BhF/iWn6BP0mlz1ymKYeqRnfpKoH6R1e6SoPCG3txYehD/ea+LWq 
mtkIHJthDUByfY6gn+wjsEjVrJfSFVt4ht+lMDLs=
X-original-to: mailman-us...@python.org
Delivered-to: mailman-us...@mail.python.org
Received: from albatross.python.org (localhost [127.0.0.1]) by mail.python.org 
(Postfix) with ESMTP id 3X0cYw1CRlzQ6g for <mailman-us...@python.org>; Mon, 20 
Aug 2012 03:17:08 +0200 (CEST)
Received: from localhost (HELO mail.python.org) (127.0.0.1) by 
albatross.python.org with SMTP; 20 Aug 2012 03:17:08 +0200
Received: from shakti.fmp.com (shakti.fmp.com [208.81.244.105]) (using TLSv1 
with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate 
requested) by mail.python.org (Postfix) with ESMTPS for 
<mailman-us...@python.org>; Mon, 20 Aug 2012 03:17:07 +0200 (CEST)
Received: from [192.168.1.17] ([::ffff:10.8.0.4]) by shakti.fmp.com with esmtp; 
Sun, 19 Aug 2012 20:11:57 -0500 id 000000000027586D.0000000050318EDD.00006F31

Second set:
-----------
Received: from mail.python.org (mail.python.org [::ffff:82.94.164.166]) (TLS: 
TLSv1/SSLv3,256bits,AES256-SHA) by shakti.fmp.com with esmtp; Sun, 19 Aug 2012 
20:13:14 -0500 id 00000000002758BD.0000000050318F2A.00006FC2
Received-spf: none (Address does not pass the Sender Policy Framework) 
SPF=HELO; sender=mail.python.org; remoteip=::ffff:82.94.164.166; 
remotehost=mail.python.org; helo=mail.python.org; receiver=shakti.fmp.com;
Received-spf: pass (Address passes the Sender Policy Framework) SPF=MAILFROM; 
sender=mailman-users-bounces+fmouse-mailman=fmp....@python.org; 
remoteip=::ffff:82.94.164.166; remotehost=mail.python.org; 
helo=mail.python.org; receiver=shakti.fmp.com;
Received: from albatross.python.org (localhost [127.0.0.1]) by mail.python.org 
(Postfix) with ESMTP id 3X0cTP0z3tzQQ0 for <fmouse-mail...@fmp.com>; Mon, 20 
Aug 2012 03:13:13 +0200 (CEST)
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/simple; d=python.org; s=200901; 
t=1345425193; bh=SE4UwD4ISPf3jV+Q3YQCSAYQHFCFh60pIQB+YnYOazE=; 
h=From:To:In-Reply-To:References:Date:Message-ID:Mime-Version: 
Subject:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help: 
List-Subscribe:Content-Type:Content-Transfer-Encoding:Sender; 
b=hC3uXpSR8f2B8fLDh4LMu7xdixjEEU3/v+YlJ6QjEkmm6YpgwRKiNZcvOxs0V7Q1B 
mmpoPCJokMWZ4X4nCupPyY0YLLDmI3jTV9tc0vSh36VARlaYoS90QypSK7/x+Z0X4f 
tVKs8Li2XFEvTNnpntETbQC9lsY8VAj3cez8v1jI=
X-original-to: mailman-us...@python.org
Delivered-to: mailman-us...@mail.python.org
Received: from albatross.python.org (localhost [127.0.0.1]) by mail.python.org 
(Postfix) with ESMTP id 3X0cTL2xBFzQM6 for <mailman-us...@python.org>; Mon, 20 
Aug 2012 03:13:10 +0200 (CEST)
Received: from localhost (HELO mail.python.org) (127.0.0.1) by 
albatross.python.org with SMTP; 20 Aug 2012 03:13:10 +0200
Received: from shakti.fmp.com (shakti.fmp.com [208.81.244.105]) (using TLSv1 
with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate 
requested) by mail.python.org (Postfix) with ESMTPS for 
<mailman-us...@python.org>; Mon, 20 Aug 2012 03:13:09 +0200 (CEST)
Received: from [192.168.1.17] ([::ffff:10.8.0.4]) by shakti.fmp.com with esmtp; 
Sun, 19 Aug 2012 20:13:05 -0500 id 00000000002758BD.0000000050318F21.00006FAC


It certainly looks to me as if the MUA sent it twice.  WHY it did so is
less obvious.

The only issue that's absent from these headers is the fact the message
1 was refused by the python.org server for unknown reasons the first
time it was sent (450-4.3.2 error). Message 2 was successfully sent a
minute later, and message 1 was tried again from the server's queue 5
minutes later and successfully delivered.  The timestamps in the
Received headers show that the order in which they were received by
shakti is the reverse of the order in which they were received by
python.org, which is what one would expect in this scenario.  The Date
header is the same for both, and is accurate:

Sun, 19 Aug 2012 20:11:56 -0500

-- 
Lindsay Haisley       | "The difference between a duck is because
FMP Computer Services |    one leg is both the same"
512-259-1190          |     - Anonymous
http://www.fmp.com    |


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