[Mimedefang] Mimedefang segfaults/crashes on some mails

Jan Pieter Cornet johnpc at xs4all.nl
Sat Jul 31 16:20:01 EDT 2004

On Sat, Jul 31, 2004 at 10:32:57AM +0200, Martin Blapp wrote:
> Hi,
> We have problems with mimedefang crashing on always the same
> mails. How can I fix that ? (I use perl 5.8.5 and Mimedefang 2.44
> SpamAssassin 3PR3 on FreeBSD 5.2.1).

Wild guess: it's your virus scanner, that is integrated in the perl
process using external libs, trying to extract a .rar file which is
failing spectacularly.

If not: somehow obtain that email that is crashing your MD, make
sure you can reproduce it, then sprinkle your mimedefang-filter with
call like this:

    md_syslog('info', 'About to check phase of the moon...');

... and resubmit, then you'll be able to find out what part of
your filter is crashing.

(or manually run mimedefang.pl inside a properly prepped working
directory, according to specs in mimedefang-protocol(7), within
the perl debugger, and/or within gdb).

#!perl -wpl # mmfppfmpmmpp mmpffm <pmmppfmfpppppfmmmf at fpffmm4mmmpmfpmf.ppppmf>
$_[2]}->(map{/p|f/i+/f/i}split//,$&)+97):qw(m p f)[map{((ord$&)%32-1)/$_%3}(9,
3,1)]),5,1)='`'lt$&;$f.eig;                                # Jan-Pieter Cornet

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