gmail.com 550-5.7.1 refusing mtr(8) output; other excessive bounces

["Constantine A. Murenin" <mureninc () gmail com>]

This has happened to me several times recently; 
has never happened until a couple of weeks ago.

> From the https://mail.google.com/mail/ web-interface, Cc an alias 
on my server, which expands to, amongst other things, my gmail.com 
email address;  a bounce is immediately received in the thread 
(apparently, gmail doesn't reject the bounces from the very same 
server from which some messages are rejected).  Most likely 
cause:  too many domain names from the mtr(8) output in the message.

Same for sending a similar message directly from my own server, 
directly to my gmail.com address, being in the Cc field:  a 
bounce is received within my own server, no message is received 
at gmail.  The bounce from such an experience is at the end of this message.

I consider this a major outage:  how many other valid semi-automated 
emails addressed to myself have been unfairly rejected by gmail on 
the SMTP level recently?

I also now know why my gmail.com address has been unsubscribed 
from several mailing lists over this summer, citing excessive 
bouncing.  My own mailserver wasn't even involved:

<<##
Delivered-To: mureninc () gmail com
Received: by 10.114.5.70 with SMTP id q6csp13073ldq;
       Tue, 10 Sep 2013 03:43:00 -0700 (PDT)
X-Received: by 10.204.76.203 with SMTP id d11mr18914232bkk.3.1378809779724;
       Tue, 10 Sep 2013 03:42:59 -0700 (PDT)
Return-Path: <lm-sensors-bounces () lm-sensors org>
Received: from flocki.atrpms.net (m.at.physik.fu-berlin.de. [160.45.254.30])
       by mx.google.com with ESMTPS id zk7si1773373bkb.190.1969.12.31.16.00.00
       (version=TLSv1 cipher=RC4-SHA bits=128/128);
       Tue, 10 Sep 2013 03:42:59 -0700 (PDT)
Received-SPF: neutral (google.com: 160.45.254.30 is neither permitted nor denied by best guess record for domain of 
lm-sensors-bounces () lm-sensors org) client-ip=160.45.254.30;
Authentication-Results: mx.google.com;
      spf=neutral (google.com: 160.45.254.30 is neither permitted nor denied by best guess record for domain of 
lm-sensors-bounces () lm-sensors org) smtp.mail=lm-sensors-bounces () lm-sensors org
Received: from localhost ([::1] helo=m.at.physik.fu-berlin.de)
        by flocki.atrpms.net with esmtp  (Exim 4.80.1)
        id 1VJLPJ-0001fB-QJ
        for mureninc () gmail com; Tue, 10 Sep 2013 12:42:59 +0200
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
From: lm-sensors-request () lm-sensors org
To: mureninc () gmail com
...

...
Your membership in the mailing list lm-sensors has been disabled due
to excessive bounces The last bounce received from you was dated
10-Sep-2013.  You will not get any more messages from this list until
you re-enable your membership.  You will receive 3 more reminders like
this before your membership in the list is deleted.
...
##>>

If you need any further info, feel free to contact me off-list.

C.


----- Forwarded message from Mail Delivery Subsystem <MAILER-DAEMON@XXXXXXXXXX> -----

Date: Sun, 22 Sep 2013 11:36:28 -0700 (PDT)
From: Mail Delivery Subsystem <MAILER-DAEMON@XXXXXXXXXX>
To: XXXXXX@bugmailXXXXXXXX
Subject: Returned mail: see transcript for details

The original message was received at Sun, 22 Sep 2013 11:36:19 -0700 (PDT)
from XXXXXlocalhost [127.0.0.1]

  ----- The following addresses had permanent fatal errors -----
<mureninc () gmail com>
   (reason: 550-5.7.1 [2001:470:7240::      12] Our system has detected that this message is)

  ----- Transcript of session follows -----
... while talking to gmail-smtp-in.l.google.com.:
> > > DATA
<<< 550-5.7.1 [2001:470:7240::      12] Our system has detected that this message is
<<< 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail,
<<< 550-5.7.1 this message has been blocked. Please visit
<<< 550-5.7.1 http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for
<<< 550 5.7.1 more information. od6si8589779bkb.242 - gsmtp
554 5.0.0 Service unavailable

Reporting-MTA: dns; XXXXXXXXXX
Received-From-MTA: DNS; localhost
Arrival-Date: Sun, 22 Sep 2013 11:36:19 -0700 (PDT)

Final-Recipient: RFC822; mureninc () gmail com
Action: failed
Status: 5.7.1
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 550-5.7.1 [2001:470:7240::      12] Our system has detected that this message is
Last-Attempt-Date: Sun, 22 Sep 2013 11:36:20 -0700 (PDT)

Return-Path: <XXXXXX@bugmailXXXXXXXX>
Received: from XXXXXXXXXX (XXXX@localhost [127.0.0.1])
        by XXXXXXXXXX (8.14.5/8.14.5) with ESMTP id r8MIaJGR015280;
        Sun, 22 Sep 2013 11:36:19 -0700 (PDT)
Received: (from XXXX@localhost)
        by XXXXXXXXXX (8.14.5/8.14.5/Submit) id r8MIaJ9o021840;
        Sun, 22 Sep 2013 11:36:19 -0700 (PDT)
X-Authentication-Warning: XXXXXXXXXX: XXXX set sender to XXXXXX@bugmailXXXXXXXX using -f
Date: Sun, 22 Sep 2013 11:36:19 -0700
From: "Constantine A. Murenin" <XXXXXX@bugmailXXXXXXXX>
To: noc () he net
Cc: mureninc () gmail com
Subject: packet loss at 10gigabitethernet9-6.core1.par2.he.net
Message-ID: <20130922183619.GA10404@XXXXXXXXXX>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Disposition: inline
User-Agent: Mutt/1.5.21 (2010-09-15)


----- End forwarded message -----