I've been trying for a long time to get our company's mail server send mail that will get accepted by the GMail spam filter. I have managed making it work for Yahoo Mail and Hotmail, sadly GMail is still marking our mails as spam.
I have configured DKIM, SPF, DMARC and verified our mail server IP address against blacklists. I also have pasted here the headers GMail gets when we send a mail.
Delivered-To: gmail-test-account@gmail.
com
Received: by 10.42.215.6 with SMTP id hc6csp107427icb;
Wed, 20 Aug 2014 07:34:26 -0700 (PDT)
X-Received: by 10.194.100.34 with SMTP id ev2mr59101019wjb.76.1408545265402;
Wed, 20 Aug 2014 07:34:25 -0700 (PDT)
Return-Path: <
[email protected]>
Received: from mail.phyramid.
com (mail.phyramid.
com. [178.157.82.23])
by mx.google.
com with ESMTPS id dj10si4827754wib.79.2014.08.20.07.34.24
for <
[email protected]>
(version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128);
Wed, 20 Aug 2014 07:34:25 -0700 (PDT)
Received-SPF: pass (google.com: domain of company@phyramid.
com designates 178.157.82.23 as permitted sender) client-ip=178.157.82.23;
Authentication-Results: mx.google.com;
spf=pass (google.com: domain of company@phyramid.
com designates 178.157.82.23 as permitted sender)
[email protected];
dkim=pass header.i=@phyramid.
com
Received: from localhost (localhost [127.0.0.1])
by mail.phyramid.
com (Postfix) with ESMTP id ED2BB2017AC
for <
[email protected]>; Wed, 20 Aug 2014 17:33:23 +0300 (EEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=phyramid.com; h=
content-type:content-type:mime-version:x-mailer:subject:subject
:message-id:to:from:from:date:date; s=dkim; t=1408545197; x=
1409409197; bh=e04RtoyF7G39lfCvA9LLhTz4nF64siZtN5IYmC18Xsc=; b=o
+6mO8Uz4Uf1G4U2q6tKUiEy2N2n/5R2VtPPwIvBE5xzK/hEd2sDGMxVzQVgIDCsK
Q0Xh+auPaQpxldQ+AEcL2XSZMrk/g0mJONjkpI19I5AwGIJCR1SVvxdecohTn9iR
bCHzrGi2wAicfDBzOH6lUBNfh2thri79aubdCYc97U=
X-Amavis-Modified: Mail body modified (using disclaimer) - mail.phyramid.
com
X-Virus-Scanned: Debian amavisd-new at mail.phyramid.
com
Received: from mail.phyramid.
com ([127.0.0.1])
by localhost (mail.phyramid.
com [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id 3JcgXZAXeFtX for <
[email protected]>;
Wed, 20 Aug 2014 17:33:17 +0300 (EEST)
Received: from whiterock.local (unknown [109.98.21.30])
by mail.phyramid.
com (Postfix) with ESMTPSA id 05CAE200280
for <
[email protected]>; Wed, 20 Aug 2014 17:33:15 +0300 (EEST)
Date: Wed, 20 Aug 2014 17:34:15 +0300
From: Company Mail <
[email protected]>
To: gmail-test-account@gmail.
com
Message-ID: <
[email protected]>
Subject: hey there!
X-Mailer: Airmail (247)
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
How was your summer?
----
Thanks a lot!