No, my list is like listn...@domain.com and the sender is like u...@domain.com. I have check the host name in the first page of General Options Section. The owner is different, ad...@otherdomain.com, witch is the administrator of the mail server.

Thank you for your answer.





On 8/2/2021 1:24 μ.μ., Onyeibo Oku wrote:
On Mon Feb 8, 2021 at 10:46 AM WAT, nikos wrote:
Hello list.

I'm running a Centos 7 mailserver with multiple domains. I create a list
for one of them and found at code 2 lines of DKIM:

dkim=pass (1024-bit key) header.d=...

dkim=fail reason="signature verification failed" (1024-bit key)
header.d=...

I guess that was the reason that many recipients didn't receive any
email, especially yahoo users.

Why there are 2 lines of Dkim and why the second is fail? SPF and DMARC
are pass.

Direct email from the same domain users DKIM, SPF, DMARC are pass.

Can someone help me?

Thank you, Nikos.
Hi Nikos,

Is the domain part of your the address used for the mailing-list the
same as the domain of the direct email?  I had a similar issue when our
direct emails bore something like some...@domain.com while the mailing list bore
listn...@mail.domain.com.

Eventually we had to create SPF, DKIM, DMARC keys/selector specific to
mail.domain.com to solve that.

Regards
Onyeibo

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