https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7416

Dave Jones <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Dave Jones <[email protected]> ---
The HEADER_FROM_DIFFERENT_DOMAINS rule in my SA 3.4.1 instance is in
72_active.cf:

ifplugin Mail::SpamAssassin::Plugin::FreeMail
  ifplugin Mail::SpamAssassin::Plugin::HeaderEval
    if (version >= 3.004000)
      header   HEADER_FROM_DIFFERENT_DOMAINS eval:check_equal_from_domains()
      describe HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level
mail domains are different
#      score    HEADER_FROM_DIFFERENT_DOMAINS 0.25
      tflags   HEADER_FROM_DIFFERENT_DOMAINS publish
endif
endif
endif

This is pretty clear that the FreeMail and HeaderEval plugin must be enabled
before this rule is going to run.

BTW, I am seeing many hits on this rule in my logs.  Type-o on my previous
search.  It's mostly mail forwarded from google.com and other servers.

It looks like this would work in a meta rule so we could close this bug even
though this wouldn't help the original mailing list issue.  The issue was an
email sent as yahoo.co.jp through yahoo.com mail servers with a return/reply
address of gmail.com.  The spammer probably couldn't send the email from a
Google account without being blocked or detected.

This could best be handled in the FreeMail plugin to detect different sender
and reply-to FreeMail domains to add a little to the score.

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