Re: [dmarc-ietf] Ticket #1 - SPF alignment

"Murray S. Kucherawy" <superuser@gmail.com> Mon, 07 December 2020 07:13 UTC

Return-Path: <superuser@gmail.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 976363A10DF for <dmarc@ietfa.amsl.com>; Sun, 6 Dec 2020 23:13:06 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.097
X-Spam-Level:
X-Spam-Status: No, score=-2.097 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.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 9FKDqukxD8B5 for <dmarc@ietfa.amsl.com>; Sun, 6 Dec 2020 23:13:05 -0800 (PST)
Received: from mail-ua1-x92b.google.com (mail-ua1-x92b.google.com [IPv6:2607:f8b0:4864:20::92b]) (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 4E09A3A10DE for <dmarc@ietf.org>; Sun, 6 Dec 2020 23:13:05 -0800 (PST)
Received: by mail-ua1-x92b.google.com with SMTP id y26so4162895uan.5 for <dmarc@ietf.org>; Sun, 06 Dec 2020 23:13:05 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=lLhsT+bvPuVKAl31msZs/PT/Iw8rG7fVBDcQG/lOnEg=; b=Ho+jEi+erJMzW2LlwIWtlud15VzDpZLte1hkOl4inaCXHj3d2HG/cRiq1a0s+n7/jJ Drh4+UVOlNvDYAgdw6kfrNUFLvCZeVrYO4wv2ldComSmFpnWAyDk9FUyjs3Rz0uuLuja 9FuXZbW11EirIN6tBguHC65AYDQt5yTN5dTEypu5NwcbRPDhjbiyGkZ6jVO8uau7zjEN abQMCMQlM2Mt+0MjgF60yuSLX3p5SOxCA9UKpIOU/ciz0Y471CpGQIQrdQKnSgWZUExt U3FZGQrzKHTXPlz3kOFH/I4/e44TIbqEh5dQBMD6HUf1zmKFfCuj1GwQcQjVEWAj7v5P NnYQ==
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=lLhsT+bvPuVKAl31msZs/PT/Iw8rG7fVBDcQG/lOnEg=; b=d7vLOisV0LvXoHsyxxYWTS65COdeGEKrd27lFrp7Y/KmcX+6fVFT8Mk7/JutX+HfDt BzwIoxrcfAsTL/1n5/8RyR5JXwVFQqCWtmdVcICElg6yVXug+PEzSikJFKEpPRHIw8iz bIYJge5kt9+6kRJUs/sN2sSr0MlU4eJ/PJ9AmtgnWQoBUMoRt2mzXxC4JtTvFr5FrC/+ Ra4HL+PboQa0onXdaKDEo+ga6XhCZqdZHwC4GfY41eiszEVBPx7ny5XHOsHeYwlRQlU5 HkfMWWw1QEY+r94ssWfDw0O/o2y9JHQLr5r+i7ZlL7IcSltZ67bJYKOwH1wph3wPYA2v +DxQ==
X-Gm-Message-State: AOAM533Zc+f8CZ32d9f8QWMpkQ1tMy2pZFpQZOBz0Bzmt5v6qtd10Z+b ujsyMhloJamppKPxSflj/+QtJUlDnbczbzFzjvc=
X-Google-Smtp-Source: ABdhPJwr+Pi4t8Yh3UhO9QqRxdQUBl+grAhABzwg+QSQ6ZhzFhYd4qWSN4qUwV9uOFk1nVvYExy+qIBHYkexeZsiZes=
X-Received: by 2002:ab0:2109:: with SMTP id d9mr10804725ual.76.1607325184157; Sun, 06 Dec 2020 23:13:04 -0800 (PST)
MIME-Version: 1.0
References: <bef64e7a-571b-a73f-dc91-aa402ca320c8@taugh.com>
In-Reply-To: <bef64e7a-571b-a73f-dc91-aa402ca320c8@taugh.com>
From: "Murray S. Kucherawy" <superuser@gmail.com>
Date: Sun, 6 Dec 2020 23:12:50 -0800
Message-ID: <CAL0qLwY-X9B6MT03dCYE6WnYOLvBjtiU1e0K6XTbFHY0LwzW-A@mail.gmail.com>
To: John R Levine <johnl@taugh.com>
Cc: IETF DMARC WG <dmarc@ietf.org>
Content-Type: multipart/alternative; boundary="000000000000a3edb605b5da8ea7"
Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/m_LwbGE_hd9br7L5VZoYI5R44k8>
Subject: Re: [dmarc-ietf] Ticket #1 - SPF alignment
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: Mon, 07 Dec 2020 07:13:07 -0000

On Tue, Dec 1, 2020 at 2:17 PM John R Levine <johnl@taugh.com> wrote:

> We would like to close this ticket by Dec 15, two weeks from now, so short
> trenchant comments are welcome.
>
> Ticket #1 is about SPF alignment.  We need to replace references to 4408
> with 7408, ando clarify what if anything we do with SPF HELO checks if
> the MAIL FROM is null.  One possibility is to say only MAIL FROM SPF
> counts, if you want to align your bounces, sign them.  The other is to
> explicitly say that HELO alignment is OK on bounces.
>

I have a slight preference for the first option.  HELO is too arbitrary in
the protocol for me to put much value in using it in any of these systems.

-MSK