A. Schulze via dmarc-discuss:
I like to point to that open topic without any answer I hoped to get
from Google
simple setup:
gmail user send with RFC5322.From *@googlemail.com via google using a
smartphone.
the user authenticate as *@gmail.com for submission.
dkim signing domain: header.d=gmail.com
spf: gmail.com
dmarc policy for googlemail.com: quarantine
result: dmarc fail.
- should gmail users no longer use RFC5322.From *@googlemail.com?
- should gmail users using RFC5322.From *@googlemail.com also
authenticate the submission as *@googlemail.com?
- or is it simply an issue that such messages are not handled
correctly at google?
Any clarification is welcome.
Thanks!
Hello,
last days I wrote to a address <u...@gmail.com>
The answer was quarantained as the dmarc check failed.
This ist the reply I receved:
Authentication-Results: mail.example.org; dmarc=fail
header.from=googlemail.com
Authentication-Results: mail.example.org;
dkim=pass (2048-bit key; unprotected) header.d=gmail.com
header.i=@gmail.com header.b=gG3f0joi
Authentication-Results: mail.example.org; spf=pass
smtp.mailfrom=<firstname.lastn...@gmail.com>
smtp.helo=mail-wi0-x234.google.com
...
Received: from [...] (users.submission.client. [public.ip])
by smtp.googlemail.com with ESMTPSA id
e8sm15252097wiz.0.2015.08.16.23.40.46
for <$me>
(version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);
Sun, 16 Aug 2015 23:40:46 -0700 (PDT)
Sender: User <firstname.lastn...@gmail.com>
From: User <firstname.middlename.lastn...@googlemail.com>
X-Google-Original-From: User <firstname.middlename.lastn...@gmail.com>
Message-ID: <55d181ee.80...@gmail.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0)
Gecko/20100101 Icedove/31.7.0
To: ... $me
...
So Sender and X-Google-Original-From are "@gmail.com", but From is
"@googlemail.com"
No idea if the user did something wrong or only hit a common pitfall.
Looks like this user may mix two similar addresses with different
domainparts while using them as RFC5322.From or SMTP-Auth Username.
Maybe the google people could clarify?
Thanks,
Andreas
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