Re: DMARC methods in mailman --- [LEDE-DEV] DMARC related mass bounces / disabled subscriptions (fwd) Jo-Philipp Wich: [LEDE-DEV] DMARC related mass bounces / disabled subscriptions

Michael Richardson <mcr+ietf@sandelman.ca> Sat, 17 December 2016 20:19 UTC

Return-Path: <mcr@sandelman.ca>
X-Original-To: ietf@ietfa.amsl.com
Delivered-To: ietf@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 12A3E129A50 for <ietf@ietfa.amsl.com>; Sat, 17 Dec 2016 12:19:53 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.901
X-Spam-Level:
X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OV0rh6JGMBpb for <ietf@ietfa.amsl.com>; Sat, 17 Dec 2016 12:19:52 -0800 (PST)
Received: from relay.sandelman.ca (relay.cooperix.net [IPv6:2a01:7e00::f03c:91ff:feae:de77]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0BD9A1293DF for <ietf@ietf.org>; Sat, 17 Dec 2016 12:19:52 -0800 (PST)
Received: from dooku.sandelman.ca (CPEbc4dfb402cc3-CMbc4dfb402cc0.cpe.net.cable.rogers.com [174.113.238.167]) by relay.sandelman.ca (Postfix) with ESMTPS id EFA151F914 for <ietf@ietf.org>; Sat, 17 Dec 2016 20:19:47 +0000 (UTC)
Received: by dooku.sandelman.ca (Postfix, from userid 179) id DBBF531E7; Sun, 18 Dec 2016 05:19:45 +0900 (KST)
From: Michael Richardson <mcr+ietf@sandelman.ca>
To: IETF Disgust List <ietf@ietf.org>
Subject: Re: DMARC methods in mailman --- [LEDE-DEV] DMARC related mass bounces / disabled subscriptions (fwd) Jo-Philipp Wich: [LEDE-DEV] DMARC related mass bounces / disabled subscriptions
In-reply-to: <20161217151451.hx5co6mjqmi2jakg@thunk.org>
References: <25431.1481725548@obiwan.sandelman.ca> <5EF6F271-1CF7-4981-8E83-C7A7B49DB8F2@gmail.com> <CDE8A76C-ECD7-4370-9823-3C78144A8850@nohats.ca> <24005.1481827604@obiwan.sandelman.ca> <alpine.LRH.2.20.1612151513060.15183@bofh.nohats.ca> <20161216202704.glz5vgu773gqqgvm@thunk.org> <20161216203905.GD13486@mournblade.imrryr.org> <01Q8KHVOKE2C011H9Q@mauve.mrochek.com> <m21sx6u8sb.wl-randy@psg.com> <6D2E8F8E-1B02-46EA-B202-D23E5385CFF5@gmail.com> <20161217151451.hx5co6mjqmi2jakg@thunk.org>
Comments: In-reply-to "Theodore Ts'o" <tytso@mit.edu> message dated "Sat, 17 Dec 2016 10:14:51 -0500."
X-Mailer: MH-E 8.6; nmh 1.6; GNU Emacs 24.5.1
MIME-Version: 1.0
Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha1; protocol="application/pgp-signature"
Date: Sat, 17 Dec 2016 15:19:45 -0500
Message-ID: <13749.1482005985@dooku.sandelman.ca>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf/BQvGvdG79DzZnia26-KJg7dJB_8>
X-BeenThere: ietf@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: IETF-Discussion <ietf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf>, <mailto:ietf-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ietf/>
List-Post: <mailto:ietf@ietf.org>
List-Help: <mailto:ietf-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf>, <mailto:ietf-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 17 Dec 2016 20:19:53 -0000

Theodore Ts'o <tytso@mit.edu> wrote:
    > Yeah, it's the "sometimes mail gets lost" problem which is the main
    > issue.  So it might actually be better to have the mailing list
    > software refuse to accept a mailing list posting from a domain with a
    > DMARC record, and it can be bounced back to the sender immediately
    > with a "sorry, try again using some e-mail address that does not have
    > DMARC support".

I really think that this is the right answer for our community.
The DMARC policy is not to forward, and we should respect it.

When ARC gets standardized, we should implement it.


--
Michael Richardson <mcr+IETF@sandelman.ca>ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-