Exim update to 4.93.0.4

lameventanas

• April 20, 2020 22:37

Hello, I'm new here and not very familiar with CPanel, sorry if this is not the right place to ask. I've been asked to diagnose a mail problem with a Linux server which is running CPanel. The server is rejecting incoming emails from a particular domain with an SPF validation error. After checking the TXT record of the domain, everything is fine and the email shouldn't be rejected. Testing with /usr/local/cpanel/3rdparty/bin/spfquery shows that the test passes, but /usr/bin/exim -bh fails. After digging into this, it's a problem with exim 4.93 that was solved in version 4.93.0.4, but the latest version I can find for CPanel is 4.93. Where can I find version 4.93.0.4 or the spec file? Thanks.

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  cPanelLauren

  • April 21, 2020 18:35

  Hello,

  Testing with /usr/local/cpanel/3rdparty/bin/spfquery shows that the test passes, but /usr/bin/exim -bh fails. After digging into this, it's a problem with exim 4.93 that was solved in version 4.93.0.4, but the latest version I can find for CPanel is 4.93. Where can I find version 4.93.0.4 or the spec file?

  
  This sounds related to an internal case we have open currently: CPANEL-31754 - which you can read more about in the thread here:

  The server is rejecting incoming emails from a particular domain with an SPF validation error.

  
  Based on this I assume that the server has a custom entry in /etc/exim.conf.local that does SPF validation as we removed this from cPanel's version of exim. The temporary workaround as discussed in the thread I linked above is to disable any SPF validation done by exim until the fix for this is added to a RELEASE version of the software. It's currently fixed in v88 which is in EDGE and it is supposed to be patched to v86 as well. I'll update the thread that's linked when I get more information on when this will be patched.

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  lameventanas

  • April 22, 2020 01:47

  Thanks for your answers, it does seem like the same issue described in the other thread. So I'm assuming that the spec, src.rpm or rpm files can't be freely downloaded? Can anyone confirm please? As a temporary solution I would like to either make my own RPM with a newer version of Exim, or downloading a package for a previous version of Exim, such as 4.92.3, which didn't have the problem. Thanks.

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  cPanelLauren

  • April 22, 2020 13:58

  So I'm assuming that the spec, src.rpm or rpm files can't be freely downloaded? Can anyone confirm please?

  
  cPanel uses its own exim build, this is confirmed in the thread I linked as well. It is not the same build as what's listed on exim's site.

  As a temporary solution I would like to either make my own RPM with a newer version of Exim, or downloading a package for a previous version of Exim, such as 4.92.3, which didn't have the problem.

  
  I actually don't think you can roll your own rpm for exim without negatively impacting the product, furthermore, it's not able to be downgraded. The only options for this are upgrade to EDGE which is set to move to CURRENT around May 4th or comment out the customizations that are incompatible with this version of exim.

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