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Emails aren't DKIM signed

Discussion in 'E-mail Discussions' started by DennisMidjord, Sep 11, 2017.

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  1. DennisMidjord

    DennisMidjord Well-Known Member

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    Hi,

    I'm trying to troubleshoot why outgoing emails aren't DKIM signed. Both DKIM and SPF have been enabled in cPanel and have passed the checks.
    I've checked with Por25's authentication verifier, and it says the following:
    ==========================================================
    Summary of Results
    ==========================================================
    SPF check: pass
    DKIM check: none
    SpamAssassin check: ham

    Any idea why?
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Is the DNS for this domain name handled by the cPanel server, or does it use remote name servers?

    Thank you.
     
  3. DennisMidjord

    DennisMidjord Well-Known Member

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    The DNS is handled by the cPanel server. Well, our name servers are setup in a cluster. I don't know if that causes any issues.
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Could you send me a private message with the domain name in-question so I can take a closer look?

    Thank you.
     
  5. DennisMidjord

    DennisMidjord Well-Known Member

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    Hi,

    As I've also explained through PM right now, it's not just one domain. I've checked with a couple of domains that we're using (as I can't just use our clients' emails without permissions) and two domains owned by a client. These domains are spread over multiple servers, and it's the same with all of them. DKIM records are present, but the emails aren't signed.
     
  6. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    I received a valid result for those domain names when testing using a command like this:

    Code:
    dig default._domainkey.domain.tld TXT
    Have you tried sending a test email to a remote server (e.g. Gmail) and then viewing the header of that message in Gmail to verify if the DKIM record is detected?

    Thank you.
     
  7. DennisMidjord

    DennisMidjord Well-Known Member

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    Hi,

    As requested, I've created a support ticket with ID 8865073.
     
  8. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    To update, it looks like this was the result of a custom smart host configuration (with MailChannels). The following link was provided that shows how to adjust the smart host entry to ensure it uses DKIM:

    Cpanel - DKIM Configuration Guide

    Thank you.
     
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