Re: [dmarc-ietf] ARC Multi Proposal

"Kurt Andersen (b)" <kboth@drkurt.com> Fri, 02 November 2018 08:56 UTC

Return-Path: <kurta@drkurt.com>
X-Original-To: dmarc@ietfa.amsl.com
Delivered-To: dmarc@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 8515E12D4F2 for <dmarc@ietfa.amsl.com>; Fri, 2 Nov 2018 01:56:39 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.999
X-Spam-Level:
X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=drkurt.com
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 D9xF3cHNP2uy for <dmarc@ietfa.amsl.com>; Fri, 2 Nov 2018 01:56:37 -0700 (PDT)
Received: from mail-lf1-x135.google.com (mail-lf1-x135.google.com [IPv6:2a00:1450:4864:20::135]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 301FD12F1A5 for <dmarc@ietf.org>; Fri, 2 Nov 2018 01:56:36 -0700 (PDT)
Received: by mail-lf1-x135.google.com with SMTP id d7-v6so827040lfi.2 for <dmarc@ietf.org>; Fri, 02 Nov 2018 01:56:36 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=drkurt.com; s=20130612; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=okNsrUfmFw8iocUv2jEBlkNus4zmtYTv+mxrkW0CVR0=; b=GQscTTJHd3I8DcMnPSxVg4ck8hMYUF1VDGRHLRRzD2puattbQKf1v4YTKXvpjD3Ghc UPNS7kONmcMDbLQKhV8Co9MscVWBhU4S4CFqg20gwzWdvt6dDfuFlC0qGaLk1xLQdTij yigMyMURqm18eS55JJWkbg+iyJXf8Tjv6Aurw=
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=okNsrUfmFw8iocUv2jEBlkNus4zmtYTv+mxrkW0CVR0=; b=POyv5xzscV5EckHxBUPKJ08yFSThB5hpC8Jn/ds4IrKawRyNITM/tkTtYcw65Lhon8 zef3CTih/GifHvbj4u01ZzT+SiUaudwpjXTkZmgyvk8865Ud8H/cItIiiRop2+z+7vvd 0LXqc72ZfeuyFWLlyBjvx0hMtmDL8fnS4+2JivsrbNMo93+Oht5YVFdPHJQHs8IqfJiy BbW/gxmPQ6gYppQz2F+tbuLEiad8NUHoymIJm9ZFYq1LXQKrYsMacAVs8KL/EfCAJu02 9PnkTaWVlpDD+kiIIx4YquphWiDtcLfEkzrhukHUkxtxxyaUd1MjfwxsWg6PCRu3N2q2 GuFA==
X-Gm-Message-State: AGRZ1gJ2UM4jn/HmHZ+tpATBzafbyDkFjhduXurhIo5wZaUvC+jDVqKS ModNuQYDbEPa+6I65de/My1B34kQcKPCHO34+PRnwg==
X-Google-Smtp-Source: AJdET5dzISn7RsFI5PT2Yuq68PRQw92vhLCxmUeeKmniaik5B5QbVZmQU46Uqid3K7gp1eHw9nXH9NPrKUv9yyHTXsM=
X-Received: by 2002:a19:cec8:: with SMTP id e191mr6239648lfg.13.1541148994079; Fri, 02 Nov 2018 01:56:34 -0700 (PDT)
MIME-Version: 1.0
References: <9957335.dUWMaE32Bo@kitterma-e6430> <20181101235621.AF0B52007DFEBA@ary.local> <CABuGu1qOstiqvHfPSnZmfgHXx-VEAq543g9GWjWGaDQ3GxFUgw@mail.gmail.com> <alpine.OSX.2.21.1811021550560.13429@ary.local>
In-Reply-To: <alpine.OSX.2.21.1811021550560.13429@ary.local>
From: "Kurt Andersen (b)" <kboth@drkurt.com>
Date: Fri, 02 Nov 2018 17:56:06 +0900
Message-ID: <CABuGu1pCusR+L+QMBbOrODFRyaNbC+JBhHoSd46gGtB95nv_nA@mail.gmail.com>
To: John Levine <johnl@taugh.com>
Cc: "dmarc@ietf.org" <dmarc@ietf.org>, Scott Kitterman <sklist@kitterman.com>
Content-Type: multipart/alternative; boundary="00000000000056a6680579aab643"
Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/QxtH3d1s3psmWg-nSjQiipYG_vk>
Subject: Re: [dmarc-ietf] ARC Multi Proposal
X-BeenThere: dmarc@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Domain-based Message Authentication, Reporting, and Compliance \(DMARC\)" <dmarc.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/dmarc>, <mailto:dmarc-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/dmarc/>
List-Post: <mailto:dmarc@ietf.org>
List-Help: <mailto:dmarc-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/dmarc>, <mailto:dmarc-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 02 Nov 2018 08:56:40 -0000

On Fri, Nov 2, 2018 at 5:51 PM John R Levine <johnl@taugh.com> wrote:

> On Fri, 2 Nov 2018, Kurt Andersen (b) wrote:
> >> With the current spec, if you have two AMS or AS with the same i=
> >> that's invalid,
> >
> > No, it is not invalid.
>
> I mean ARC as it's implemented now, not in our multi-signing draft.
>

It seems like a poor implementation choice to be enforcing something which
is not part of the spec :-), especially when there are parenthetical
comments and references to things like ARC-MULTI to warn you against
leaping to foot-shooting enforcement choices.

--Kurt