Emails from my domain are recognized as spam by Gmail, Yahoo and ..

Question

Hi everyone,

I’ve installed iRedMail on a fresh droplet to handle email from all my domains but it seems that all famous email providers tag emails from this mail server as spam.

I’ve already configured DKIM, SPF, DMARC and here is the header of the mail:

Content-Type: text/plain; charset=us-ascii
Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2070.6\))
Content-Transfer-Encoding: 7bit
Received-Spf: pass (google.com: domain of guesthouse@lostlang.org designates 188.166.14.83 as permitted sender) client-ip=188.166.14.83;
Message-Id: <5F0A2E89-DC63-4D94-882D-A7AA0ABC3BB3@lostlang.org>
Test

What could be the cause of the problem?

Thank you

Doug C · Answer

Ok everything looks good. I must have missed the dkim=pass in you first post. I swear I didn’t see it before must have been asleep. Sorry about that.

You do have mail._domainkey.lostideaslang as a CNAME for your spf record. You don’t need this but it shouldn’t hurt anything either.

Might want to set your v=DMARC1;p=quarantine to p=none for testing. You will still get reports back.

The include:lostideaslang.org shouldn’t be needed since its the same ip as your server. Again don’t think it would hurt anything.

The only other thing it might be the ip is blacklisted by the major isps. Only solution is snapshot server and try rebuilding it on a new ip.

Hopefully someone else might have the answer.

Sorry couldn’t be more help.

Doug C · Answer

It doesn’t look like you have your dkim setup correctly.

gmail should come back with

Authentication-Results: mx.google.com;
       spf=pass (google.com: domain of user@domain.com designates 1.2.3.4 as permitted sender) smtp.mail=user@domain.com;
       dkim=pass header.i=@domain.com;
       dmarc=pass (p=QUARANTINE dis=NONE) header.from=domain.com

Your mail.domainkey txt record is wrong. It is a CNAME pointing back to your SPF record. It should be a TXT record. Looking something like


;; ANSWER SECTION:
mail._domainkey.domain.com. 117 IN TXT   "v=DKIM1\; p=MIGfMA0GCSqGS..."

If using amavis run “amavisd-new showkeys” it will give you the info for the TXT record to past in your dns

“amavisd-new testkeys” will report success or not.

I checked the common email blacklist site and you have a clean ip. The big boys may have a different list to work off of. So no guarantee this will solve your problem.

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Emails from my domain are recognized as spam by Gmail, Yahoo and ..

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