IETF Logo Mail Archive

Re: [dmarc-ietf] p=quarantine

Dave Crocker <dcrocker@gmail.com> Wed, 09 December 2020 18:09 UTC

Return-Path: <dcrocker@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 3FCAC3A16DD for <dmarc@ietfa.amsl.com>; Wed, 9 Dec 2020 10:09:04 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.098
X-Spam-Level:
X-Spam-Status: No, score=-2.098 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, NICE_REPLY_A=-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 hyKbm-cjvM9m for <dmarc@ietfa.amsl.com>; Wed, 9 Dec 2020 10:09:03 -0800 (PST)
Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) (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 F38113A16B3 for <dmarc@ietf.org>; Wed, 9 Dec 2020 10:09:02 -0800 (PST)
Received: by mail-pg1-x52d.google.com with SMTP id v29so1659732pgk.12 for <dmarc@ietf.org>; Wed, 09 Dec 2020 10:09:02 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language; bh=XkZIq8FRWQ9aIG681hCwIzux5+2mT42GUs8novG/U2M=; b=Rwi4k69vMVYaHAL+84jNMhK1BiRymbFjXBJecg0mbkyoLlOfjSfXU/gPBtFJaIJdWW jWE9+gOdtvrxzoO/ZHLf4gbV3A2c0NJFTWZm+Ixi5Eh6ss/bCcfFmn1qIc+npVJnjTJI 4cbD++gu/FTFClEotfkIQ48f8ydC6qcuCWy/u9w+JbS9P5RoUPwvam95BaR6A9FeyCEX 9HQ3b1GVlrvmESMWN6gkVi+f4xl3FR3WGATPSnnXvV2dCAD+Hbdev25GdOoFVdeaS5Di EPs6IsL07lyHY8rMSSJ7blHKLtPdxFwMmLlbvhlbvXDXU4kwOstKmDRJTWxD06r8Qhp2 n2nw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=XkZIq8FRWQ9aIG681hCwIzux5+2mT42GUs8novG/U2M=; b=bvDF32qyFNb78X/PMztokCcxVTzxNoe7EKWg+Fi+u1Ssen0xBO1iND03IW6reNGqYY 4J7sLvlz5pmq1j/t/OdUHAHngvMrVH8P0FX/gB8yJ9xQpgQlQ9XLCKKE6LilGPL6qZ8a hX9zQb/NHAg54pDxE6yjTAxKo41cGuJ9s2eXCx4UsLzJNJLPqLXQLni6bolIAxzRcO92 5qBD+l5ILo8vtcfmwwfHFSduHcaeFnrTqDADOzts6f5pVZQBGYoEjbDbvMw6LZSQNJa9 ipZqQuSsh4zA+wyb1l61I4b++7ytX1Z4yVgpm7QunjTV/dGPWA+VF7dGoluNMv/8W0Bm ltmw==
X-Gm-Message-State: AOAM530uVSr0Gp5D31uMKYiLfkNZROH/4yG0tpF0aBkcRWjA9J8NNU2Q 2ArIo58JOuwZBH4AL4lidXIgk2jLzuI=
X-Google-Smtp-Source: ABdhPJwnRoZ+qocuY1og7ghSj9NzJNOtYjjNpk8VtPaYbeyDsXMctvCFRWYo6s4Dwjjzi6N8fDbkTg==
X-Received: by 2002:a62:ed15:0:b029:19d:a2c2:f9a9 with SMTP id u21-20020a62ed150000b029019da2c2f9a9mr3383848pfh.23.1607537341968; Wed, 09 Dec 2020 10:09:01 -0800 (PST)
Received: from [192.168.0.109] (c-24-130-62-181.hsd1.ca.comcast.net. [24.130.62.181]) by smtp.gmail.com with ESMTPSA id p9sm3316072pfq.109.2020.12.09.10.09.01 for <dmarc@ietf.org> (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 09 Dec 2020 10:09:01 -0800 (PST)
To: IETF DMARC WG <dmarc@ietf.org>
References: <923de33f-3707-facf-389e-371f6ee64008@gmail.com> <16B0B820-7080-4937-8642-3A6B84B441AA@gmail.com>
From: Dave Crocker <dcrocker@gmail.com>
Message-ID: <c1a8c519-8d2e-f287-48d1-00ac74d22b49@gmail.com>
Date: Wed, 09 Dec 2020 10:09:00 -0800
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.1
MIME-Version: 1.0
In-Reply-To: <16B0B820-7080-4937-8642-3A6B84B441AA@gmail.com>
Content-Type: multipart/alternative; boundary="------------D9FDC2B6116937167A93477C"
Content-Language: en-US
Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/F-zlFphB7ZgxUmlT8liW15KH2rY>
Subject: Re: [dmarc-ietf] p=quarantine
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: Wed, 09 Dec 2020 18:09:04 -0000

On 12/9/2020 9:52 AM, tjw ietf wrote:
> Obviously the domain owner has no 'authority' over those using the 
> domain without authorization.  For this latter set of folk, the most 
> the domain owner can do is provide information to receivers of 
> unauthorized use.


It might be worth a bit of thinking about what, exactly, DMARC can 
reasonably do and how it should be summarized, for popular consumption:

    *Alignment - *DMARC defines a basis for authenticating use of the
    domain name in the rfc5322.From addr-spec.  (But nothing else in
    that header field or elsewhere in the message, neither header nor body.

    *Severity of unauthorized use - *DMARC provides a means of
    indicating to receivers how serious the domain owner considers
    unauthorized use of that domain name to be.

    *Reporting -* DMARC defines a mechanism for reporting DMARC-related
    activity by a receiver

I've tried to state each of these precisely and accurately, in terms of 
real-world pragmatics.

Comments?

d/

-- 
Dave Crocker
dcrocker@gmail.com
408.329.0791

Volunteer, Silicon Valley Chapter
American Red Cross
dave.crocker2@redcross.org

v2.23.0 | Report a Bug | By Email