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I use Google Mail for all my personal mails. I use a custom mail address which is configured to forward all mails to my Google Mail account. When sending mails I use the feature to use another smtp server. All my custom mail addresses are hosted at yandex.

Now to the problem: Google Mail is marking all incoming mails to my email address ("something"@jakobjarosch.de) as spam.

In Google Mail it looks like the following: google mail inbox

This happens for nearly all mails I receive, except mails from another Google Mail account.

I hope someone can help me out why this is caused, therefore here are some more details about an example mail I received:

Message ID  <2413721486894709@web43j.yandex.ru>
Created at: Sun, Feb 12, 2017 at 11:18 AM (Delivered after 1 seconds)
From:   Jakob Jarosch <"firstname.lastname"@yandex.com>
To: "something"@jakobjarosch.de
Subject:    Test-Mail
SPF:    PASS with IP 5.255.227.236
DKIM:   PASS with domain yandex.com
DMARC:  PASS

And here the full mail dump: http://pastebin.com/raw/q8QUff06

I'm a bit surprised because the mail passes SPF, DKIM and DMARC and is nevertheless marked as spam.

I tried it with sending mails from:

  • other Gmail accounts [no spam]
  • My work mail account [spam]
  • A yandex mail account [spam]
  • IsMyEmailWorking.com [spam]
  • A german mail hoster (web.de [spam]
  • Another company mail account [spam]

Another curious thing is, this happens for mails to "something"@jakobjarosch.de and "something"@foxylion.de, but not for mails to "something"@jakob.soy. The configuration is the same for all of the three domains (or at least should be).

I would appreciate any help. I've no more ideas especially because it also happens for mails where SPF, DKIM and DMARC are working.

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