Will DMARC make it hard for outsourced marketing mail operations? I just got this email (which is not spam, I subscribed to this marketing material) in which RFC5321.MailFrom and RFC5322.From are obviously not in allignment, which is understandable as the sending party (the outsourced marketing company) will want to handle themselves the bounces for that email campaign, but nontheless the RFC5322.From address has to be a subdomain of microsoft.com to give it "authenticity" in the eyes of the final recipient as it's the RFC5322.From address what the recipient's MUA will display to the user.
So it seems that, although this kind of email does perfectly pass a pure-SPF check, it nontheless will always fail a SPF-mechanism check in DMARC, and therefore will have DKIM as the only DMARC mechanism to be able to get a DMARC pass. Is that correct? ==============================sample outsourced marketing email begins========================== Return-Path: <bounce-866153_html-348127768-2408061-217021-1...@bounce.email.microsoftemail.com> X-Original-To: [email protected] Delivered-To: [email protected] X-Greylist: delayed 902 seconds by postgrey-1.27 at mta.example.com; Thu, 28 Mar 2013 21:28:25 CET Received-SPF: pass (bounce.email.microsoftemail.com: Sender is authorized to use 'bounce-866153_html-348127768-2408061-217021-1...@bounce.email.microsoftemail.com' in 'mfrom' identity (mechanism 'include:cust-spf.exacttarget.com' matched)) receiver=mta.example.com; identity=mfrom; envelope-from="bounce-866153_html-348127768-2408061-217021-1...@bounce.email.microsoftemail.com"; helo=mta28.email.microsoftemail.com; client-ip=66.231.92.214 Received: from mta28.email.microsoftemail.com (mta28.email.microsoftemail.com [66.231.92.214]) by mta.example.com (Postfix) with ESMTP id D02C2CA0 for <[email protected]>; Thu, 28 Mar 2013 21:28:25 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; s=200608; d=e-mail.microsoft.com; h=From:To:Subject:Date:MIME-Version:Reply-To:Message-ID:Content-Type; [email protected]; bh=FVW3MrK1zIt62hyGPaH5Xtaj3w0=; b=XMXhy6OWoEWMevPngqfiW/RFwadxJaQyBMdlLBrZo4UObIV2N2mM47FowQOalUUlqGy/V+vVKM73 E4SemkyJk6kpHKvI4Kalg0vpY2kzTr7N016CfgtUCKdQ7z3+uFxPxZVnyw9vem7hhT2uo89mCILh vtLrkpdMQFGp1jNLuAw= DomainKey-Signature: a=rsa-sha1; c=nofws; q=dns; s=200608; d=e-mail.microsoft.com; b=K+IWOL6xUJgegUMXp2o1Shkb/y10MKV9xZzQCk3BxgoU8yejJKq+3N8/dFygpa5mvHklzBQiH0di iNzgCRg8NQt5LFiY33XSfLswyxzLRMfh/i70fGV9C6OcCAeoUaKDxZswg8JP4cNOlwjSl0Gfab4G LqFjw9R8/l1xVac9O4M=; Received: by mta28.email.microsoftemail.com id haijuq163hsn for <[email protected]>; Thu, 28 Mar 2013 14:13:19 -0600 (envelope-from <bounce-866153_html-348127768-2408061-217021-1...@bounce.email.microsoftemail.com>) From: "Explore Windows" <[email protected]> To: <[email protected]> Subject: Free email + free 7Gb storage Date: Thu, 28 Mar 2013 14:13:19 -0600 MIME-Version: 1.0 Reply-To: "Microsoft" <reply-fe9a1674756c047b74-866153_html-348127768-217021-1...@email.microsoftemail.com> x-job: 217021_2408061 Message-ID: <[email protected]> Content-Type: multipart/alternative; boundary="hQlv58VGP91u=_?:" ===============================sample outsourced marketing email ends================================ Regards, J. Gomez _______________________________________________ dmarc-discuss mailing list [email protected] http://www.dmarc.org/mailman/listinfo/dmarc-discuss NOTE: Participating in this list means you agree to the DMARC Note Well terms (http://www.dmarc.org/note_well.html)
