[170924] in North American Network Operators' Group
Re: responding to DMARC breakage
daemon@ATHENA.MIT.EDU (Jimmy Hess)
Sat Apr 12 21:35:06 2014
In-Reply-To: <534949B9.1080704@meetinghouse.net>
From: Jimmy Hess <mysidia@gmail.com>
Date: Sat, 12 Apr 2014 20:34:22 -0500
To: Miles Fidelman <mfidelman@meetinghouse.net>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sat, Apr 12, 2014 at 9:12 AM, Miles Fidelman
<mfidelman@meetinghouse.net> wrote:
> - Yahoo (operationally) and the DMARC authors are intentionally
> un-responsive (as are hotmail, comcast, a few others; gmail, I note is not
> bouncing mail)
>
> How do we respond as operators, beyond late-night, ad-hoc patches to list
> software, that only partially resolve the problem?
In the face of intentional unresponsiveness: blacklisting.
Start contacting Yahoo.com subscribers and explain the situation to
these users, and inform the users that, for the time being:
yahoo.com e-mail addresses can no longer participate in the mailing
lists, because of Yahoo's new policy: And make some suggestions of
good alternatives to using Yahoo mail.
Then use mail filters to block messages to mailing list addresses
with From: header yahoo.com (which cause the problem), next
suspend subscriptions for @yahoo.com users, and configure mailing
list software so that new @yahoo.com based e-mail addresses cannot
subscribe or post to the lists.
--
-JH
