Re: Realistic responses to DMARC

Michael Richardson <mcr@sandelman.ca> Mon, 19 December 2016 01:59 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 043A112945C for <ietf@ietfa.amsl.com>; Sun, 18 Dec 2016 17:59:16 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.001
X-Spam-Level:
X-Spam-Status: No, score=-5.001 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-3.1, 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 LU25aHiMEG3K for <ietf@ietfa.amsl.com>; Sun, 18 Dec 2016 17:59:14 -0800 (PST)
Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3:216:3eff:fe7c:d1f3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3824C1293F2 for <ietf@ietf.org>; Sun, 18 Dec 2016 17:59:14 -0800 (PST)
Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id 457B8200A3; Sun, 18 Dec 2016 21:17:19 -0500 (EST)
Received: from obiwan.sandelman.ca (localhost [IPv6:::1]) by sandelman.ca (Postfix) with ESMTP id D0F8F63768; Sun, 18 Dec 2016 20:59:12 -0500 (EST)
From: Michael Richardson <mcr@sandelman.ca>
To: "Theodore Ts'o" <tytso@mit.edu>
Subject: Re: Realistic responses to DMARC
In-Reply-To: <20161218065905.5g66jgkvtckydmry@thunk.org>
References: <9AD6AAD6812D3B9F8379226B@PSB> <20161218022823.8779.qmail@ary.lan> <20161218055834.he6gkupqp5xqlvml@thunk.org> <alpine.OSX.2.11.1612180101460.14297@ary.qy> <20161218065905.5g66jgkvtckydmry@thunk.org>
X-Mailer: MH-E 8.6; nmh 1.6+dev; GNU Emacs 24.5.1
X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m<nPbLgmtKK-5dC@#:k
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <11021.1482112752.1@obiwan.sandelman.ca>
Content-Transfer-Encoding: quoted-printable
Date: Sun, 18 Dec 2016 20:59:12 -0500
Message-ID: <11022.1482112752@obiwan.sandelman.ca>
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf/gROgud4BOBkwZ3B8auvdC3BFdCw>
Cc: John R Levine <johnl@taugh.com>, IETF general list <ietf@ietf.org>
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: Mon, 19 Dec 2016 01:59:16 -0000

Theodore Ts'o <tytso@mit.edu> wrote:
    >> > I can think of one major open source project (namely, the Linux
    >> > kernel) which has refused to do either.
    >>
    >> I'm reasonably sure you're mistaken here.  Don't they rewrite From: headers?

    > Nope, vger.kernel.org doesn't rewrite from headers.  An example of a
    > recent e-mail I received from the linux-fsdevel maliing list:

Does LKML reject p=reject mail, so that people on providers that respect
p=reject aren't bounced from the mailing list?

--
]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        | network architect  [
]     mcr@sandelman.ca  http://www.sandelman.ca/        |   ruby on rails    [