DKIM - stream is not in valid format

[CCS]

Archie,

I think I have setup DKIM correctly with the public key published to DNS for corporatecomputingsolutions.com as well as the private key in the ArgoSoft mail server 1.2.0.0 GUI under DKIM-outgoing.  I have the selector 55555 entered.  When I click the 'Test Keys' I get 'Stream is not in valid format'.  Anything I can try to get this working?

I validated the DKIM DNS entry for corporatecomputingsolutions.com with selector 55555 at https://www.mail-tester.com/spf-dkim-check

Thank you very much for your support.

[CCS]

What does 'Stream is not in valid format' mean?  I want to get DKIM working.  Thanks.

[ArGoSoft Products]

So, it happens only when doing test?

Possibly, I am missing something there, the feature is relatively new.  Can you try to regenerate new key pair and try again?  Possibly, there is some extra space or extra character somewhere.

[CCS]

Got it.  DKIM works now.  I had copied a wrong key-pair (from a certificate).  Here is how I generated the working DKIM key-pair...

openssl genrsa -out private.key 1024

openssl rsa -in private.key -pubout -out public.key

I may switch 2048 or higher, but my DNS host requires breaking up into multiple records.

Now I have DMARC working also.

Thanks again.