Re: [dmarc-ietf] A policy for direct mail flows only, was ARC questions

Michael Thomas <mike@mtcc.com> Sat, 05 December 2020 21:04 UTC

Return-Path: <mike@fresheez.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 D67933A0D2F for <dmarc@ietfa.amsl.com>; Sat, 5 Dec 2020 13:04:43 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.652
X-Spam-Level:
X-Spam-Status: No, score=-1.652 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NICE_REPLY_A=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=no autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=mtcc-com.20150623.gappssmtp.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 Col_CGsiZDCH for <dmarc@ietfa.amsl.com>; Sat, 5 Dec 2020 13:04:42 -0800 (PST)
Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) (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 C19843A0D2C for <dmarc@ietf.org>; Sat, 5 Dec 2020 13:04:42 -0800 (PST)
Received: by mail-pg1-x52f.google.com with SMTP id o5so5770867pgm.10 for <dmarc@ietf.org>; Sat, 05 Dec 2020 13:04:42 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mtcc-com.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-transfer-encoding:content-language; bh=MFmr6vTs0d15vC8jZ/VouoPz4EZt4gPkEQEotu3Kdi0=; b=I5ts9VCeJrRW9CBbSSujWZVR00nla2hkJiILPQtZp/w5fQ2Szx7W4OVlSg5XP10nP1 TTAzDAz5ZuG/pi+TQoSYjqRpNIaurPN1FigVPVret7Z9ifgyK6SsK/vrOyPS3RgPeKvv F8A6q8h8e6tXrhlqMzfDnZRSZSdbNWJPmzmHJjJCLVtjt5x80HOtkdffZslohHUpLPyZ 9rTKxZTWLVrUBaggxrCts7ddterQPht7QrCP0wd1WZhVPRQXEzJwddX/AHyCv8+vgXIM CWQXGGuUdJ2wrmH8YyRW6bCREfnfVwjZOjfHSPJE4nW+cFtpLbfFhfK7WHE4S3bvC+AS GbQA==
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-transfer-encoding :content-language; bh=MFmr6vTs0d15vC8jZ/VouoPz4EZt4gPkEQEotu3Kdi0=; b=X3vTaagvPUX+HP7Oc1HUE8mv6d8GOEuhJ3klnBWyGDIOGXXyWgtMJsoj3xj2CNGqvf MvtL7EuyDYgKPUvBsCeBtEjsrE1jPOdnCePG+iVTWbcuZmaf+vGSc39jgzT//2cXOjkC pUlPnzNyh82VyD3+C5WTVbLWnv2layjZgde24VaY9N34c7Sr6L0H6OW1qEgxAFYjl4Dw QrT/s6SGJvQzjXLjvZYEYMyE1+88p1XOhOQY0mokktWeVVqroQ5mi98njDpf+7PCvf3e pj4sX9s1IdEXQwdb1dzlgTMMeN3bDGpMkkN7UnQNJjKbNM3FFBZa6suvtbP2IndCO0Yf YfAw==
X-Gm-Message-State: AOAM531DrQpGsNoE9iDvtJqrSVBLIkgOTvoyfWjCTTi0TXLxNJo6nva1 x3CFFcE3fDwG64a5qA+Zc/IZDuv8kRELfsNa
X-Google-Smtp-Source: ABdhPJyXGm0xTuVjyUx6IE6hed8G52xOQA/hHkLxWWYrADQ8ns23vm40yZ1fryPl4YQGEGCNisL1qQ==
X-Received: by 2002:aa7:9699:0:b029:18a:e057:c44 with SMTP id f25-20020aa796990000b029018ae0570c44mr9551169pfk.34.1607202281790; Sat, 05 Dec 2020 13:04:41 -0800 (PST)
Received: from mike-mac.lan (107-182-42-33.volcanocom.com. [107.182.42.33]) by smtp.gmail.com with ESMTPSA id gm2sm6061574pjb.35.2020.12.05.13.04.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 05 Dec 2020 13:04:41 -0800 (PST)
To: John Levine <johnl@taugh.com>, dmarc@ietf.org
References: <20201205205608.7AC122904381@ary.qy>
From: Michael Thomas <mike@mtcc.com>
Message-ID: <dc89e6ed-6fc0-bd03-f6b7-1b985cd9c74b@mtcc.com>
Date: Sat, 05 Dec 2020 13:04:39 -0800
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.5.0
MIME-Version: 1.0
In-Reply-To: <20201205205608.7AC122904381@ary.qy>
Content-Type: text/plain; charset="utf-8"; format="flowed"
Content-Transfer-Encoding: 7bit
Content-Language: en-US
Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/YDe3vfdxLnkfBYuKv9bqC2kFA7Q>
Subject: Re: [dmarc-ietf] A policy for direct mail flows only, was ARC questions
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: Sat, 05 Dec 2020 21:04:44 -0000

On 12/5/20 12:56 PM, John Levine wrote:
>
> 2) Last week someone was complaining about the expense of the
> signatures in ARC seals, now multiple signatures don't hurt anything.
> While I agree with the latter sentiment, what changed?
>
It means that you can't control somebody else's infrastructure. We can 
control whether standards are created carefully and thoughtfully.

Mike