You are not using the right selector in MXToolbox

domain.ext:selector

whynotplastic.com:8dc65a05918eb55

If you plug that in, MXToolbox reports that the DKIM key exists.

Mike

Thank you, yes, I know it exists because smartermail detects it correctly.

But there must be some other setting that I am setting up incorrectly. I went to MXtoolBox to try to troubleshoot reports for messages sent to GMail accounts.

I am new to DMarc and DKIM, this is the error that drioves me crazy. As mentioned, we have one IP address for all domains... so it might be related to that:

  <row>
      <source_ip>174.140.197.236</source_ip>
      <count>1</count>
      <policy_evaluated>
        <disposition>none</disposition>
        <dkim>fail</dkim>
        <spf>pass</spf>
      </policy_evaluated>
    </row>

Now, I noticed that I have to enter every key twice, one for the domain (for example whynotplastic.com) , one for the domain used by smartermail (mail.whynotplastic.com) otherwise it is not detected and receive an error. Do I have to enter the key also for the IP address? I mean listing all the keys for that IP address (which I am not sure I can do that with my DNS service provider... or I will have to figure out how...)?

Please forgive me if I am asking a stupid question, I spent the weekend working on this, and I am getting out of the fog, but not completly out yet... slowly slowly...

Thank you a bunch Mike. nevermind... my reverse DNS are not set up as they should. Our server used to handle both DNS and reverse DNS on the same machine before we moved the DNS out, but we never took care of the reverse... or better, the technician set up only one domain. All good... hopefully we should fix everything in the next couple of days... we never realized it because by pure luck the only existing pointer was on our main mail service... we never notice until now...

:-)

Thanks again!!!