Question

In another post, I was wondering if someone had also emails from Google App Engine ending up in the spam folder of Hotmail.

Thanks to help from the community, I could find a way to solve the issue. I did leave the original post as it solves the issue for a set of email systems (such as free.fr).

However, the fix was unfortunately partial and it remains issues with hotmail. Once this problem will be solved, I will update the initial post.

You’ll find below the message which ends up in the spam folder of Hotmail.

What looks weird to me is the following :

• Yesterday I made tests where the email had “dkim=pass”. Today other tests have “dkim=temperror”. Although yesterday I had “dkim=pass”, the messages ended up in the spam folder
• Today I have “dkim=temperror” and I don’t understand what it means

Does anyone has some ideas ? Getting more and more difficult to understand why it works on all email systems except hotmail.

Thanks,

Hugues

x-store-info:4r51+eLowCe79NzwdU2kR3P+ctWZsO+J
Authentication-Results: hotmail.com; sender-id=pass (sender IP is 209.85.213.207) header.from=[e-mail]; dkim=temperror header.d=plugsystems.com; x-hmca=pass
X-SID-PRA: [e-mail]
X-Message-Status: n:0:n
X-SID-Result: Pass
X-DKIM-Result: TempError
X-AUTH-Result: PASS
X-Message-Delivery: Vj0xLjE7dXM9MDtsPTA7YT0wO0Q9MjtHRD0yO1NDTD00
X-Message-Info: o9rlR4nWDTdAvwKKkW+ebjaNRBhWfirkKplRTvFb0jLyKfWDD1CiQJSrYGPEuh2GOIiEGly1AGxiI/aHFqM5d3PpaLYYerrWHzwUPlyoEy9CbytLpScTK1Jq+2/GQW4lIqYx3o3TG40EkcgVaBPqlw==
Received: from mail-yx0-f207.google.com ([209.85.213.207]) by BAY0-MC3-F27.Bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4900);
Sat, 4 Aug 2012 03:55:31 -0700
Received: by yenl5 with SMTP id l5so28780yen.6
for ; Sat, 04 Aug 2012 03:55:31 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=plugsystems.com; s=google;
h=mime-version:reply-to:x-google-appengine-app-id:message-id:date
:subject:from:to:content-type:content-transfer-encoding;
bh=euOvGlAMboKg1Q3U9r2HjPZ7pOICyqvz1yxwQnTnDp8=;
b=VLAlR0aAgxPJ/a3E+ZgWuZWXb3ZgocGXCPcp/4B0mLeCnI02mmohF6TLm2wMj1O8Od
HW8H6EIujSK/oirDJSAyyqN5/u1vhL3Bs0B2lafJjBVDkSsL1mP7DBIj6HMKrQpd6cee
b+URUbQ0tT8cadBoilvBxklEbt6d2XKFl5qBw=
MIME-Version: 1.0
Received: by 10.236.116.74 with SMTP id f50mr2524543yhh.33.1344077731015; Sat,
04 Aug 2012 03:55:31 -0700 (PDT)
Reply-To: Plugimmo
X-Google-Appengine-App-Id: s~plugimmo
Message-ID: <[e-mail]>
Date: Sat, 04 Aug 2012 10:55:31 +0000
Subject: Plugimmo
From: Plugimmo
To: Olivier Truemath
Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes
Content-Transfer-Encoding: base64
Return-Path: [e-mail]
X-OriginalArrivalTime: 04 Aug 2012 10:55:31.0611 (UTC) FILETIME=[AAAD0EB0:01CD722F]

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ZT03MjJjNGFhM2NhYTlhNWZlNTIzZTVjZDU3OTQxZjdlOA0K

Answer 1

I’m not sure about the DKIM temperror but take a look at step 3. “Set up a SenderID record” http://www.codinghorror.com/blog/2010/04/so-youd-like-to-send-some-email-through-code.html.
I think hotmail in particular uses SenderID, which may be the cause of your mails going to spam.

Also take a look http://mailchimp.com/about/authentication/ which shows a breakdown of which mail servers use each type of authentication.

Good luck,
Rob

Edit:

If you are still having issues with mail going to the junkmail in Hotmail, then have a look at this resource from Microsoft. The resource provides a suite of services to help you find out why your mail is being spammed, and tools to help you stop your mails going to spam.

Summary of the links on include:

• Joining the junk email reporting program to receive updates about your mails that gets spammed
• Joining Smart Sender Service to see how ip-range,mails etc are rated/viewed by Hotmail filters
• Deliverability Issue Submission
• Third party service to safelist senders