Re: DMARC methods in mailman

"John Levine" <johnl@taugh.com> Tue, 20 December 2016 19:56 UTC

Return-Path: <johnl@taugh.com>
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 ABF771295C5 for <ietf@ietfa.amsl.com>; Tue, 20 Dec 2016 11:56:27 -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, RCVD_IN_DNSWL_NONE=-0.0001, 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 QGwDAVotRusK for <ietf@ietfa.amsl.com>; Tue, 20 Dec 2016 11:56:26 -0800 (PST)
Received: from miucha.iecc.com (abusenet-1-pt.tunnel.tserv4.nyc4.ipv6.he.net [IPv6:2001:470:1f06:1126::2]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2E992120727 for <ietf@ietf.org>; Tue, 20 Dec 2016 11:56:25 -0800 (PST)
Received: (qmail 96555 invoked from network); 20 Dec 2016 19:56:29 -0000
Received: from unknown (64.57.183.18) by mail1.iecc.com with QMQP; 20 Dec 2016 19:56:29 -0000
Date: 20 Dec 2016 19:56:01 -0000
Message-ID: <20161220195601.23551.qmail@ary.lan>
From: "John Levine" <johnl@taugh.com>
To: ietf@ietf.org
Subject: Re: DMARC methods in mailman
In-Reply-To: <m1cJIF7-0000DEC@stereo.hq.phicoh.net>
Organization:
X-Headerized: yes
Mime-Version: 1.0
Content-type: text/plain; charset=utf-8
Content-transfer-encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf/AJYdPw6GMK6otaK2oPbqJptaQnI>
Cc: pch-ipv6-ietf-3@u-1.phicoh.com
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: Tue, 20 Dec 2016 19:56:27 -0000

In article <m1cJIF7-0000DEC@stereo.hq.phicoh.net> you write:
>Just a random idea, I don't think I have seen it before, but I may have missed
>it.
>
>What about adding a checkbox in the mailman profile for subscribers of the
>lists that basically says: if you detect that the sender is using DMARC then
>please rewrite the From header.

Whether a mail system enforces DMARC policies is up to the system's
manager, not individual users.  Even in the IETF, I expect that many,
perhaps a majority, of users have only the dimmest idea what if
anything their operator does with DMARC.

R's,
John