[Bug 3654] New: check_for_from_dns doesn't like two From lines in header

[bu...@bugzilla.spamassassin.org]

http://bugzilla.spamassassin.org/show_bug.cgi?id=3654

           Summary: check_for_from_dns doesn't like two From lines in header
           Product: Spamassassin
           Version: 2.63
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Rules (Eval Tests)
        AssignedTo: spamassassin-dev@incubator.apache.org
        ReportedBy: sa-bugs@vandekamer.com


Investigating a SpamAssassin report with a NO_DNS_FOR_FROM I found strange MX 
and A queries in the guilty DNS:

pc-active.nlforumbeheer@pc-active.nl

Looking carefully at the headers I saw the following (replace xx with nl, just 
to protect the existing e-mailaddress :-) :

From: forumbeheer@pc-active.xx
Message-ID: <63...@www.pc-active.nl>
Date: Sun,  1 Aug 2004 20:22:42 +0200
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: PHP
X-MimeOLE: Produced By phpBB2
From: forumbeheer@pc-active.xx


I can now create all kinds off strange e-mails with simular results. The real 
bug is of course in phpBB, but I think that SpamAssassin must also check for 
bad headers. I haven't tried to include lots of rubish between the two From 
lines, but possible this could lead to all kinds of other unwanted behavior...



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