Re: [IETF] DMARC methods in mailman
Viktor Dukhovni <ietf-dane@dukhovni.org> Sun, 25 December 2016 18:06 UTC
Return-Path: <ietf-dane@dukhovni.org>
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 0586112951A for <ietf@ietfa.amsl.com>; Sun, 25 Dec 2016 10:06:04 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.9
X-Spam-Level:
X-Spam-Status: No, score=-1.9 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001] 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 81JvABBF02AU for <ietf@ietfa.amsl.com>; Sun, 25 Dec 2016 10:06:02 -0800 (PST)
Received: from mournblade.imrryr.org (mournblade.imrryr.org [38.117.134.19]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C5A2C1294F0 for <ietf@ietf.org>; Sun, 25 Dec 2016 10:06:02 -0800 (PST)
Received: from [IPv6:2604:2000:1382:81a2:300e:e520:130e:a1c0] (unknown [IPv6:2604:2000:1382:81a2:300e:e520:130e:a1c0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mournblade.imrryr.org (Postfix) with ESMTPSA id 6AB0A284B55 for <ietf@ietf.org>; Sun, 25 Dec 2016 18:06:01 +0000 (UTC) (envelope-from ietf-dane@dukhovni.org)
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (Mac OS X Mail 10.2 \(3259\))
Subject: Re: [IETF] DMARC methods in mailman
Date: Sun, 25 Dec 2016 13:05:59 -0500
References: <m1cKvWY-0000HFC@stereo.hq.phicoh.net> <EA2191A9-CF62-4984-8275-E0295A207237@gmail.com>
To: IETF general list <ietf@ietf.org>
In-Reply-To: <EA2191A9-CF62-4984-8275-E0295A207237@gmail.com>
Message-Id: <35FC8FF8-A4E6-423F-994C-304B4B3AAF94@dukhovni.org>
X-Mailer: Apple Mail (2.3259)
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf/LjqX2SjHu5SchrfXrTz3bee4kQ0>
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: Sun, 25 Dec 2016 18:06:04 -0000
> On Dec 25, 2016, at 6:11 AM, Yoav Nir <ynir.ietf@gmail.com> wrote: > > > A per-receiver setting is one extra step for new subscribers. That’s something I’d rather avoid. More importantly, recipients don't always know whether they need anti-DMARC armour or not, and are neither responsible for nor consulted on potential changes in the receiving domain's policies. Therefore, per-recipient policy is unlikely to work well. If message (subject and/or body) modification is a hard requirement, then it seems that for now anti-DMARC measures are needed in the "From:" header. FWIW, my view is that forgoing message modification is better than From mangling. The need for email origin authentication to specify that "Sender" preempts "From" has been well understood for a long time before there there was DMARC. If there is to be a non-broken replacement, it must correct this design error and place the "burden" of dealing with that on any MUAs that fail to display Sender (as e.g. from <sender> on behalf of <author>). -- Viktor.
- Re: [IETF] DMARC methods in mailman John Levine
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman John Levine
- Re: DMARC methods in mailman Theodore Ts'o
- Re: DMARC methods in mailman Randy Bush
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman John R Levine
- Re: DMARC methods in mailman S Moonesamy
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman Philip Homburg
- Re: DMARC methods in mailman Theodore Ts'o
- Re: DMARC methods in mailman S Moonesamy
- Re: DMARC methods in mailman Alexey Melnikov
- DMARC stats for IETF mailing lists (was DMARC met… Alexey Melnikov
- Re: DMARC methods in mailman S Moonesamy
- RE: DMARC methods in mailman Christian Huitema
- Re: DMARC methods in mailman John Levine
- Re: DMARC methods in mailman Randy Bush
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Philip Homburg
- Re: [IETF] DMARC methods in mailman Yoav Nir
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Ted Lemon
- Re: [IETF] DMARC methods in mailman tom p.
- Re: [IETF] DMARC methods in mailman Patrik Fältström
- Re: [IETF] DMARC methods in mailman Philip Homburg
- Re: [IETF] DMARC methods in mailman Theodore Ts'o
- Re: [IETF] DMARC methods in mailman John C Klensin
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman John Levine
- Re: [IETF] DMARC methods in mailman Theodore Ts'o
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- RE: [IETF] DMARC methods in mailman Christian Huitema
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman S Moonesamy
- Re: [IETF] DMARC methods in mailman Dave Crocker
- Re: [IETF] DMARC methods in mailman Theodore Ts'o
- Re: [IETF] DMARC methods in mailman John C Klensin
- Re: [IETF] DMARC methods in mailman Dave Crocker
- RE: [IETF] DMARC methods in mailman Christian Huitema
- Re: [IETF] DMARC methods in mailman Dave Crocker
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Dave Crocker
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni
- Re: [IETF] DMARC methods in mailman Viktor Dukhovni