Gmail marque mes e-mails comme spam. Les messages passent SPF et DKIM, mais échouent DMARC. Existe-t-il un moyen de faire passer mes messages DMARC?
Je me suis récemment inscrit à l'hébergement WordPress chez Flywheel, qui utilise Mandrill pour les e-mails transactionnels. Mon site comporte plusieurs formulaires qui envoient des notifications par e-mail lors de leur soumission.
J'attache la source brute d'un exemple de message:
Delivered-To: [email protected]
Received: by 10.36.109.5 with SMTP id m5csp1332570itc;
Sun, 1 Feb 2015 23:03:34 -0800 (PST)
X-Received: by 10.236.2.6 with SMTP id 6mr7036797yhe.179.1422860614601;
Sun, 01 Feb 2015 23:03:34 -0800 (PST)
Return-Path: <bounce-md_30068542.54cf2145.v1-57b0f565d61f4314ae4398e41d1cf6f7@mandrillapp.com>
Received: from mail128-15.atl41.mandrillapp.com (mail128-15.atl41.mandrillapp.com. [198.2.128.15])
by mx.google.com with ESMTPS id g67si3643342yhd.195.2015.02.01.23.03.34
for <[email protected]>
(version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Sun, 01 Feb 2015 23:03:34 -0800 (PST)
Received-SPF: pass (google.com: domain of bounce-md_30068542.54cf2145.v1-57b0f565d61f4314ae4398e41d1cf6f7@mandrillapp.com designates 198.2.128.15 as permitted sender) client-ip=198.2.128.15;
Authentication-Results: mx.google.com;
spf=pass (google.com: domain of bounce-md_30068542.54cf2145.v1-57b0f565d61f4314ae4398e41d1cf6f7@mandrillapp.com designates 198.2.128.15 as permitted sender) smtp.mail=bounce-md_30068542.54cf2145.v1-57b0f565d61f4314ae4398e41d1cf6f7@mandrillapp.com;
dkim=pass [email protected];
dmarc=fail (p=QUARANTINE dis=QUARANTINE) header.from=seesawsf.com
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; s=mandrill; d=mail128-15.atl41.mandrillapp.com;
h=From:Sender:Subject:To:Message-Id:Date:MIME-Version:Content-Type; [email protected];
bh=Jt6YNkQAh5eG3xb1p6nYqPNm8rQ=;
b=HwSrIhBVCHMWd2/PMVTb49MJ/nrtEXVsIbV5wIzMyVNPiaCzmI5t5JkPM+E00Ug6CziUbTgUGM2o
M/2W3jq43+EYjXGmVatW1Q3GcnErPc14WQr3b0FtCJFeTxVKR3wublilVvWyA9oRtTqsgyWc0Mlj
0LrqrPb6UXTPre52Fog=
DomainKey-Signature: a=rsa-sha1; c=nofws; q=dns; s=mandrill; d=mail128-15.atl41.mandrillapp.com;
b=qx6ydLL6hfTwC7h8XIW5C6jwtBHZ2R/5g8cCE60yXMxhLbH+fD5fc4kLXYNR6Ok5qlwvMKkG/aU5
2/AQkTHLHxsq7fmVBpDFnxI1R2T1vBkYZ6StFnkhQp1tHUTfGrj+5j5K8+msc+qiIktNRSeL12JD
egxGpd+2goJerCPfGsQ=;
Received: from pmta04.atl01.mandrillapp.com (127.0.0.1) by mail128-15.atl41.mandrillapp.com id hpsgkc1mqukr for <[email protected]>; Mon, 2 Feb 2015 07:03:34 +0000 (envelope-from <bounce-md_30068542.54cf2145.v1-57b0f565d61f4314ae4398e41d1cf6f7@mandrillapp.com>)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mandrillapp.com;
[email protected]; q=dns/txt; s=mandrill; t=1422860613; h=From :
Sender : Subject : To : Message-Id : Date : MIME-Version : Content-Type
: From : Subject : Date : X-Mandrill-User : List-Unsubscribe;
bh=3BX+Ypp8U/OwrT6jZiEJ7HZzbu5vXIAOTBSMt9pdT/c=;
b=D4qNdklkpV8zM74TZFQ8CkUy8N3zJesDWFWnNN6qAZ4eqW3WTCjg0W7Sooks5h+IiqC55Z
2DbpzSC1GuNMDFbmxzUTeWXyA1QU/TpDrpHnd9D9qDLiflNTmWcrwKlT6U8Bp00d+itgq9bv
ZhmZZ2+vY3fe3rFHv26UKwvdusFmg=
From: seesaw registration <[email protected]>
Sender: seesaw registration <[email protected]>
Subject: [removed]
Return-Path: <bounce-md_30068542.54cf2145.v1-57b0f565d61f4314ae4398e41d1cf6f7@mandrillapp.com>
X-Sg-User: flywheelxxxxx
X-Sg-Opt: PWD=/www
X-Php-Originating-Script: 0:class-phpmailer.php
X-Priority: 3
X-Mailer: PHPMailer 5.2.7 (https://github.com/PHPMailer/PHPMailer/)
To: <[email protected]>
Message-Id: <[email protected]>
Received: from [162.243.115.105] by mandrillapp.com id 57b0f565d61f4314ae4398e41d1cf6f7; Mon, 02 Feb 2015 07:03:33 +0000
X-Report-Abuse: Please forward a copy of this message, including all headers, to [email protected]
X-Report-Abuse: You can also report abuse here: http://mandrillapp.com/contact/abuse?id=30068542.57b0f565d61f4314ae4398e41d1cf6f7
X-Mandrill-User: md_30068542
Date: Mon, 02 Feb 2015 07:03:33 +0000
MIME-Version: 1.0
Content-Type: multipart/alternative; boundary="_av-S0IDuFcF1O5aP8YpCVA_Kg"
--_av-S0IDuFcF1O5aP8YpCVA_Kg
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
[ removed message content ]
--_av-S0IDuFcF1O5aP8YpCVA_Kg
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit
[ removed message content ]
--_av-S0IDuFcF1O5aP8YpCVA_Kg--
Le problème est dû à une incohérence entre le chemin de retour et l'en-tête From :.
Chemin de retour: mandrillapp.com
De: @ seeawsf.com
Réf: https://space.dmarcian.com/how-can-spfdkim-pass-and-yet-dmarc-fail/
Si le domaine est différent, DAMRC ne peut pas authentifier l'événement émetteur bien que SPF et DKIM soient passés et l'authentification échouera.
Dans ce cas, SPF et DKIM authentifient mandrillapp.com et non pour seeawsf.com.
Comme solution de contournement, Retrun-Path et Header From doivent être le même domaine ou DMARC échouera.
la source