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DKIM: encountered the following problem validating domain : bodyhash_mismatch

Discussion in 'E-mail Discussion' started by lfpiaggio, Jul 20, 2018.

  1. lfpiaggio

    lfpiaggio Member

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    Hello, guys.

    I have 2 cpanel's servers. CP4 and CP6

    A client opened a support saying that the email has been returned.

    What the client sent:

    I had tested with a account compos@example.com.br sending e-mails to compos@domain.com.br and testecompos@live.com. And it doesn't appear problem with the DKIM.

    What can it be?

    The DKIM assinature of two domains is fine. I have been tested it on mailtester.
    The CP4 and CP6 is different servers, but in same local.

    Look the prints bellow
     

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    #1 lfpiaggio, Jul 20, 2018
    Last edited by a moderator: Jul 20, 2018
  2. lfpiaggio

    lfpiaggio Member

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    The problem appear when the server was updated to version v72.0.10
     
  3. cPanelLauren

    cPanelLauren Forums Analyst II
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    Hi @lfpiaggio


    Based on the header output (which I modified to remove the actual domain names) it looks like you're using MailScanner because this isn't something directly supported by cPanel I'd like to know if you're still getting the error with it disabled.

    Also out of curiosity I'd like to know what you have set for the following at WHM>>Service Configuration>>Configuration Manager:

    Allow DKIM verification for incoming messages
    By default, Exim verifies syntactically valid signatures in incoming mail, even when Exim is not configured to act on the results of the check. This verification process can degrade your server's performance.

    Reject DKIM failures
    Reject mail at SMTP time if the sender fails DKIM key validation.
     
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  4. lfpiaggio

    lfpiaggio Member

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    As i said:

    Its happens sometimes with our clients.

    I tested and it doesnt not appear problem with the dkim key.

    The dkim verification qnd reject fails is enabled
     
  5. lfpiaggio

    lfpiaggio Member

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    Its look something about Outlook that change the dkim Key?

    This is the 3rd client's support.
     
  6. lfpiaggio

    lfpiaggio Member

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    I tried to emulate the fail dkim, with the same configurations of outlook client of my client. Same domain to same recipients. But it doesnt appear the erro and the msg delivery with sucess
     
  7. cPanelLauren

    cPanelLauren Forums Analyst II
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    I understood what you said but mailscanner has been known to cause issues similar to this. Because it's a 3rd party plugin which is not supported by cPanel and this behavior does not normally occur on systems with cPanel's default configuration I want to rule this out as a cause. Please let us know if the issue persists with MailScanner disabled.
     
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  8. lfpiaggio

    lfpiaggio Member

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    Without sucess...

    What you think about refresh time in zone differents of servers?
     
  9. cPanelLauren

    cPanelLauren Forums Analyst II
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    Hi lfpiaggio

    I can't see that being related to the issue at hand at this point (this long after a modification). If you're still having an issue with the DKIM records getting hash mismatch errors can you please open a ticket using the link in my signature? Once open please reply with the Ticket ID here so that we can update this thread with the resolution once the ticket is resolved.


    Thanks!

     
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