[LinuxBIOS] [ADMIN] Mail headers: random variations?

[Carl-Daniel Hailfinger]

Hi,

(yes, I read mail headers.) I have noticed that mails I receive via the
list can have two differing Return-Paths, depending on some random
circumstances. Both of the following header lines have been seen for
mails sent 3 seconds after each other, differing in amost nothing except
the Return-Path:

Return-Path:

Return-Path:

The Return-Path variation is independent of the original sender, I have
seen it for autogenerated commit mails as well as mails for every single
person I checked.

Is anybody else seeing this?

Regards,
Carl-Daniel

From - Thu Nov 22 19:16:34 2007
X-Account-Key: account3
X-UIDL: 7704a18f6aed6e11e08e98be09d88b73
X-Mozilla-Status: 0001
X-Mozilla-Status2: 00000000
X-Mozilla-Keys:                                                                                 
Return-Path: 
X-Flags: 1001
Delivered-To: GMX delivery to [e-mail]
Received: (qmail invoked by alias); 22 Nov 2007 18:10:41 -0000
Received: from khepri.openbios.org (EHLO khepri.openbios.org) [80.190.231.112]
  by mx0.gmx.net (mx021) with SMTP; 22 Nov 2007 19:10:41 +0100
Received: from localhost ([127.0.0.1] helo=khepri.openbios.org)
    by khepri.openbios.org with esmtp (Exim 4.68)
    (envelope-from )
    id 1IvGVc-0006xO-K2
    for [e-mail]; Thu, 22 Nov 2007 19:10:40 +0100
Received: from mail.gmx.net ([213.165.64.20])
    by khepri.openbios.org with smtp (Exim 4.68)
    (envelope-from )
    id 1IvGV5-0006kb-To
    for [e-mail]; Thu, 22 Nov 2007 19:10:15 +0100
Received: (qmail invoked by alias); 22 Nov 2007 18:10:07 -0000
Received: from stud215072.studentenheim.uni-tuebingen.de (EHLO
    [172.16.252.128]) [134.2.215.72]
    by mail.gmx.net (mp007) with SMTP; 22 Nov 2007 19:10:07 +0100
X-Authenticated: #31060655
Message-ID: 
Date: Wed, 21 Nov 2007 15:39:17 +0100
From: Carl-Daniel Hailfinger 
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US;
    rv:1.8.1.8) Gecko/20070803 SUSE/1.1.5-0.1 SeaMonkey/1.1.5
MIME-Version: 1.0
To: LinuxBIOS 
X-Spam-Score: -0.1 (/)
Subject: [LinuxBIOS] [PATCH] v3: duplicate less code
X-BeenThere: [e-mail]
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: The LinuxBIOS project mailing list <linuxbios.linuxbios.org>
List-Unsubscribe: http://www.linuxbios.org/mailman/listinfo/linuxbios,
    
List-Archive: http://www.linuxbios.org/pipermail/linuxbios
List-Post: 
List-Help: 
List-Subscribe: http://www.linuxbios.org/mailman/listinfo/linuxbios,
    
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Sender: linuxbios-bounces+c-d.hailfinger.devel.2006=[e-mail]
Errors-To: linuxbios-bounces+c-d.hailfinger.devel.2006=[e-mail]
X-Duff: Orig. Duff, Duff Lite, Duff Dry, Duff Dark,
    Raspberry Duff, Lady Duff, Red Duff, Tartar Control Duff
X-GMX-Antivirus: -1 (not scanned, may not use virus scanner)
X-GMX-Antispam: 0 (Sender is in whitelist: [e-mail])
X-GMX-UID: tvF3dpFZIyd0cYqXrWZrykNaa2FkZtXJ

From - Thu Nov 22 19:16:34 2007
X-Account-Key: account3
X-UIDL: fceb6e1f02120862aab3a48797356394
X-Mozilla-Status: 0001
X-Mozilla-Status2: 00000000
X-Mozilla-Keys:                                                                                 
Return-Path: 
X-Flags: 1001
Delivered-To: GMX delivery to [e-mail]
Received: (qmail invoked by alias); 22 Nov 2007 18:11:34 -0000
Received: from khepri.openbios.org (EHLO khepri.openbios.org) [80.190.231.112]
  by mx0.gmx.net (mx007) with SMTP; 22 Nov 2007 19:11:34 +0100
Received: from localhost ([127.0.0.1] helo=khepri.openbios.org)
    by khepri.openbios.org with esmtp (Exim 4.68)
    (envelope-from )
    id 1IvGWP-0007HZ-6O; Thu, 22 Nov 2007 19:11:29 +0100
Received: from mail.gmx.net ([213.165.64.20])
    by khepri.openbios.org with smtp (Exim 4.68)
    (envelope-from )
    id 1IvGV9-0006lP-1h
    for [e-mail]; Thu, 22 Nov 2007 19:10:21 +0100
Received: (qmail invoked by alias); 22 Nov 2007 18:10:10 -0000
Received: from stud215072.studentenheim.uni-tuebingen.de (EHLO
    [172.16.252.128]) [134.2.215.72]
    by mail.gmx.net (mp021) with SMTP; 22 Nov 2007 19:10:10 +0100
X-Authenticated: #31060655
Message-ID: 
Date: Wed, 21 Nov 2007 16:30:56 +0100
From: Carl-Daniel Hailfinger 
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US;
    rv:1.8.1.8) Gecko/20070803 SUSE/1.1.5-0.1 SeaMonkey/1.1.5
MIME-Version: 1.0
To: LinuxBIOS 
X-Spam-Score: 0.3 (/)
Subject: [LinuxBIOS] Vendor contacts - how to proceed
X-BeenThere: [e-mail]
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: The LinuxBIOS project mailing list <linuxbios.linuxbios.org>
List-Unsubscribe: http://www.linuxbios.org/mailman/listinfo/linuxbios,
    
List-Archive: http://www.linuxbios.org/pipermail/linuxbios
List-Post: 
List-Help: 
List-Subscribe: http://www.linuxbios.org/mailman/listinfo/linuxbios,
    
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Sender: [e-mail]
Errors-To: [e-mail]
X-Duff: Orig. Duff, Duff Lite, Duff Dry, Duff Dark,
    Raspberry Duff, Lady Duff, Red Duff, Tartar Control Duff
X-GMX-Antivirus: -1 (not scanned, may not use virus scanner)
X-GMX-Antispam: 0 (Sender is in whitelist: [e-mail])
X-GMX-UID: AaM3Z7JseSE4K86RsnUhhl52IGRvb4AE