Email from Google App Engine is sent to the SPAM folder even after the DKIM procedure

Question

In another message , I was wondering if anyone has any email messages from the Google App Engine in the Hotmail spam folder.

Thanks to the help of the community, I was able to find a way to solve the problem. I left the original post as it solves the problem for a set of email systems (e.g. free.fr).

However, the fix, unfortunately, was partial and remains a problem with hotmail. As soon as this problem is resolved, I update the initial record.

Below you will find a message that falls into the Hotmail spam folder.

What looks strange to me is this:

• Yesterday I did tests in which the letter was "dkim = pass". Today, other tests have "dkim = temperror". Although I had "dkim = pass" yesterday, the messages ended up in the spam folder
• Today I have "dkim = temperror" and I do not understand what this means.

Does anyone have any ideas? It is becoming increasingly difficult to understand why it works on all mail systems except hotmail.

Thanks,

Gyug

x-shop-info: 4r51 + eLowCe79NzwdU2kR3P + ctWZsO + J, Authentication-Results: hotmail.com; sender-id = pass (sender IP - 209.85.213.207) header.from=[e-mail] ; dkim = temperror header.d = plugsystems.com; x-hmca = X-SID-PRA transmission: [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 == Obtained 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, Aug 4 2012 03:55:31 -0700 Received: yenl5 with SMTP id l5so28780yen.6 for; Sat, Aug 04 2012 03:55:31 -0700 (PDT) DKIM Signature: v = 1; a = sha256-RSA; c = relaxed / relaxed; d = plugsystems.com; s = Google; h = mime version: for reply: x-Google-AppEngine-application-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: 10.236.116.74 with SMTP f50mr2524543yhh.33.1344077731015 identifier; Sat, Aug 04 2012 03:55:31 -0700 (PDT) Reply to: Plugimmo X-Google-Appengine-App-Id: s ~ plugimmo Message ID: < [e-mail] > Date: Sat, Aug 04 2012 10:55:31 +0000 Subject: Plugimmo From: Plugimmo To: Olivier Tomatat Content-Type: text / plain; encoding = ISO-8859-1; Format = tech; delsp = yes Content-Transfer-Encoding: base64 Return-path: 3o_8cUAgJEJwLHQCEIIKCI6EH.8KIKHEREAN.PNQAI6PDDKPI6EH.BN@M3KW2WVR GUFZ5GODRSRYTGD7.apphosting.bounces.google.com X-OriginalArrivalTime: 04 Aug 2012 10: 55: 31.0611 (UTC) FILETIME = [AAAD0EB0: 01CD722F]

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Answer 1

I'm not sure about the DKIM temperror, but take a look at step 3. "Set up the SenderID record" http://www.codinghorror.com/blog/2010/04/so-youd-like-to-send-some-email-through- code.html . I think that hotmail in particular uses SenderID, which can cause spam in your mail.

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

Good luck Rob

Edit:

If you still have problems sending mail to junkmail in Hotmail, check out this Microsoft resource . The resource provides a set of services to help you find out why your mail is being sent as spam, and tools to help you stop sending emails.

Link summary includes:

• Joining a spamming program to receive updates about your spam emails
• Joining the smart sender service to find out how ip range, emails, etc. rated / viewed by Hotmail filters
• Presentation of delivery results
• Third-party service for forwarding senders