Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal

John Levine <johnl@taugh.com> Tue, 20 June 2023 16:34 UTC

Return-Path: <johnl@iecc.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 61022C1575B9 for <dmarc@ietfa.amsl.com>; Tue, 20 Jun 2023 09:34:17 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.847
X-Spam-Level:
X-Spam-Status: No, score=-6.847 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, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_HI=-5, RCVD_IN_ZEN_BLOCKED_OPENDNS=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, URIBL_DBL_BLOCKED_OPENDNS=0.001, URIBL_ZEN_BLOCKED_OPENDNS=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=iecc.com header.b="lrhdEVFh"; dkim=pass (2048-bit key) header.d=taugh.com header.b="D1JVEMev"
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ky_CEVxA99td for <dmarc@ietfa.amsl.com>; Tue, 20 Jun 2023 09:34:12 -0700 (PDT)
Received: from gal.iecc.com (gal.iecc.com [IPv6:2001:470:1f07:1126:0:43:6f73:7461]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 76D73C15152E for <dmarc@ietf.org>; Tue, 20 Jun 2023 09:33:50 -0700 (PDT)
Received: (qmail 22093 invoked from network); 20 Jun 2023 16:33:49 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=iecc.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=5649.6491d4ed.k2306; bh=ohzdVD2CIw6zMyyld8H2QROF/N/zqVcVhF+1zNnTDGA=; b=lrhdEVFhseQ5Q7J6UTJ4G5lhedSqyv8oLFYeY9mT4aPGlF/G6C8r2heregwiZyIW3/Kr1LokEdpsxptaVk9bBI5BJhK6sWRCdShWFUiD8x9Yb7txZQJGfP4zhgEQrzzVwFm1C5alki2NtESgTGWTlmEsGGeZ6KWy23hv7QpvAiIn+K4uUsYFq+xUi+qkIZ4VzRECBWBouNAHA3ZRZQ4vG7tpujolHtucfR+C839K2V0V1bIV2XSnx2f6rEUz7+OOS3LpgZte5fK7qCqd6NeTFgJ+i0mUpRdqhwu9HBhHWF3CTxtWWAs7uv3YsP3kU3Un5LqOCyj0EDbY+5z6n0uo+Q==
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=taugh.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=5649.6491d4ed.k2306; bh=ohzdVD2CIw6zMyyld8H2QROF/N/zqVcVhF+1zNnTDGA=; b=D1JVEMevm+BetUVFQQ/4zueQ2PjSY8QqgoRI/XCXi8n13REdlxtB6cAizzrXPk9uT7MC61ZeY4SgsPjiUzbj2MY+Q/UnLgjeJKoO7LHC4x3tlC6f30HTPmWYYLjISnYxt61HZO8cNZO4e21G2frgEVCLBGjzWb3nxhTy+DPvQcfia+BLk2ZccOEJ394Os5iuqjOC2p5aM3LAHNPSMZTeorvlXlNoAVSByhYljSZh8m4Lzym51/KqtcaHx7Y7Ay1rGO2XqUOM+Q3eZYDpsoL4dh9urHcDzPGwwQqBHXHuEE9BW4LQWUvGb2HJZAXG2YpasWeofJT1KI0/Il9m2keNEg==
Received: from ary.qy ([IPv6:2001:470:1f07:1126::78:696d:6170]) by imap.iecc.com ([IPv6:2001:470:1f07:1126::78:696d:6170]) with ESMTPS (TLS1.3 ECDHE-RSA AES-256-GCM AEAD) via TCP6; 20 Jun 2023 16:33:49 -0000
Received: by ary.qy (Postfix, from userid 501) id 6345DF6FA360; Tue, 20 Jun 2023 12:33:48 -0400 (EDT)
Date: Tue, 20 Jun 2023 12:33:48 -0400
Message-Id: <20230620163348.6345DF6FA360@ary.qy>
From: John Levine <johnl@taugh.com>
To: dmarc@ietf.org
Cc: tobias.herkula@1und1.de
In-Reply-To: <a30eecc64ff6421ba6a88f0533837028@1und1.de>
Organization: Taughannock Networks
X-Headerized: yes
Cleverness: minimal
Mime-Version: 1.0
Content-type: text/plain; charset="utf-8"
Content-transfer-encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/dmarc/4D38cKff-q8zdxOgDcTuYTeSiNg>
Subject: Re: [dmarc-ietf] DMARC2 & SPF Dependency Removal
X-BeenThere: dmarc@ietf.org
X-Mailman-Version: 2.1.39
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: Tue, 20 Jun 2023 16:34:17 -0000

It appears that Tobias Herkula  <tobias.herkula@1und1.de> said:
>-=-=-=-=-=-
>Sadly they can’t, there are Mailbox Providers that expect SPF Records, so to maintain deliverability to those, you have to keep SPF
>records in place and can’t switch to an DKIM only DMARC.

Nobody's saying you can't publish SPF.  We're just saying DMARC should ignore it.

R's,
John