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  • DKIM failures and SPF questions

    From Knute Johnson@21:1/5 to All on Thu Feb 22 09:08:09 2024
    I have sendmail 8.17.1.9 running my personal email accounts. I have set
    up DKIM and have specified a DMARC record in my DNS. I have that
    configured to send me status emails. My question is why I have so many failures. The message I get often show failures of DKIM but SPF passes.
    There is no explanation why they failed. In the _dmarc record I have p=quarantine and ptc=100. My SPF record specifies -all.

    The failure rate is probably 20% on DKIM and hardly ever on SPF. Do I
    need to look for something here?

    Thanks,

    --

    Knute Johnson

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  • From Marco Moock@21:1/5 to All on Thu Feb 22 17:06:41 2024
    On 22.02.2024 um 09:08 Uhr Knute Johnson wrote:

    I have sendmail 8.17.1.9 running my personal email accounts. I have
    set up DKIM and have specified a DMARC record in my DNS. I have that configured to send me status emails. My question is why I have so
    many failures.

    Set up another test server that checks DKIM, SPF and DMARC and check
    what those tools report in the logs.

    --
    kind regards
    Marco

    Send spam to muell456@cartoonies.org

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  • From HQuest@21:1/5 to All on Thu Feb 22 15:24:53 2024
    First and foremost, not sponsored. Those are a few tools I've found out there that helped me troubleshoot these and other problems myself.

    https://dkimvalidator.com/
    https://easydmarc.com/tools/
    https://dmarcian.com/domain-checker/

    This might give you some hints on where to look next.

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  • From none@21:1/5 to All on Thu May 23 18:25:01 2024
    I have sendmail 8.17.1.9 running my personal email accounts.  I have set
    up DKIM and have specified a DMARC record in my DNS.  I have that
    configured to send me status emails.  My question is why I have so many failures.  The message I get often show failures of DKIM but SPF passes.
     There is no explanation why they failed.  In the _dmarc record I have p=quarantine and ptc=100.  My SPF record specifies -all.

    The failure rate is probably 20% on DKIM and hardly ever on SPF.  Do I
    need to look for something here?

    Thanks,



    I have also 20% failing, most of this is outlook.com/sendgrid. Seems to
    be known

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