[Mailman-Developers] anti-backscatter mm-handler (was before next release: disable backscatter in default installation)

[Kenneth Porter]

--On Friday, March 07, 2008 4:31 PM -0800 Mark Sapiro <mark at msapiro.net> 
wrote:

> Also, if you're happy with the way the new mm_handler is working, let
> me know, and I'll get it in the contrib directory for 2.1.10.

I'm seeing lines like the following in maillog. How do I trace the source 
of the error? (I can debug code in an Emacs/shell situation, I just don't 
know how to debug within the sendmail/mm-handler/mailman environment to 
isolate the offending module and line.)

Mar 10 11:13:30 centos sendmail[26008]: m2749udR026109: 
to=<tvservers at lists.matureasskickers.net>, delay=3+14:03:32, 
xdelay=00:00:00, mailer=mailman, pri=7863419, 
relay=lists.matureasskickers.net, dsn=4.0.0, stat=Operating system error

In sendmail.mc:

Mmailman,       P=/usr/local/sbin/mm-handler, F=rDFMhlqSu, 
U=mailman:mailman,
                S=EnvFromL, R=EnvToL/HdrToL,
                A=mm-handler $h $u


My only change to your script was the Perl location in the shebang and 
these two lines (to match the CentOS RPM file locations):

$MMWRAPPER = "/usr/lib/mailman/mail/mailman";
$MMLISTDIR = "/var/lib/mailman/lists";