https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6022

           Summary: False positives on TVD_RCVD_IP and TVD_RCVD_IP4 rules on
                    Yahoo mail
           Product: Spamassassin
           Version: 3.2.5
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Rules
        AssignedTo: [email protected]
        ReportedBy: [EMAIL PROTECTED]


Created an attachment (id=4393)
 --> (https://issues.apache.org/SpamAssassin/attachment.cgi?id=4393)
Example Headers

I receive my email though BT which uses Yahoo to provide its email service. It
seems the Yahoo servers don't perform a reverse DNS lookup on the connection
and always puts an IP address in the header which triggers the TVD_RCVD_IP and
TVD_RCVD_IP4 rules on all messages.

I've attached headers from an email to show the problem. In the example it's
not an issue, but it biases the score by 5.1 which is significant for other
emails.  Obviously, I can disable these rules, or increase my required score,
but this is really a problem if I want to forward my mail somewhere else that
uses a Spamassassin installation that isn't under my control.


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