[Mimedefang] mimedefang in endless loop (socketpair)

Tomasz Ostrowski tometzky at batory.org.pl
Tue May 23 07:18:18 EDT 2006


I've got two mimedefang 2.56 processes hanged in endless loop (in
running state). I'll have to kill this processes but I want to send
you information I'm able to gather about them in case it can be
useful for finding a bug.

A command "strace -p [PID]" of processes shows endless stream of
	socketpair(PF_??? (0x4001c14c), SOCK_??? (0), , 3175087548, [1, 1]) = 0
lines. "lsof -p [PID]" of one of them shows 21 open
"/var/spool/MIMEDefang/mimedefang.sock" files and also open
	/var/spool/MIMEDefang/mdefang-k4MDkN1J014281/HEADERS (deleted)
	/var/spool/MIMEDefang/mdefang-k4MDkN1J014281/COMMANDS (deleted)
	/var/spool/MIMEDefang/mdefang-k4MDkNAw014242/HEADERS (deleted)
	/var/spool/MIMEDefang/mdefang-k4MDkNAw014242/COMMANDS (deleted)
	/var/spool/MIMEDefang/mdefang-k4MDkNfs014278/HEADERS
	/var/spool/MIMEDefang/mdefang-k4MDkNfs014278/COMMANDS

/var/spool/MIMEDefang/mdefang-k4MDkNfs014278/HEADERS is empty and
/var/spool/MIMEDefang/mdefang-k4MDkNfs014278/COMMANDS looks like this
	S<>
	sSIZE=3019
	=_ smtp11.wanadoo.fr%20[193.252.22.31]
	=daemon_name MTA
	=i k4MDkNfs014278
	=if_addr 62.89.72.200
	=if_name statek.batory.org.pl
	=j statek.batory.org.pl
	=mail_addr 
	=mail_host 
	=mail_mailer local
	Qk4MDkNfs014278
	Hsmtp11.wanadoo.fr
	I193.252.22.31
	Esmtp11.wanadoo.fr
	R<l at batory.org.pl> local ? l

Corresponding /var/log/maillog entries look like this:

May 22 15:46:24 statek sendmail[14281]: k4MDkN1J014281:
	from=<>, size=3019, class=0, nrcpts=0, proto=ESMTP, daemon=MTA,
	relay=smtp11.wanadoo.fr [193.252.22.31]
May 22 15:46:24 statek sendmail[14281]: k4MDkN1J014281:
	<l at batory.org.pl>... User unknown

May 22 15:46:31 statek sendmail[14242]: k4MDkNAw014242:
	from=<>, size=3019, class=0, nrcpts=0, proto=ESMTP, daemon=MTA,
	relay=smtp11.wanadoo.fr [193.252.22.31]
May 22 15:46:31 statek sendmail[14242]: k4MDkNAw014242:
	<l at batory.org.pl>... User unknown

May 22 15:46:23 statek sendmail[14278]: k4MDkNfs014278:
	from=<>, size=3019, class=0, nrcpts=0, proto=ESMTP, daemon=MTA,
	relay=smtp11.wanadoo.fr [193.252.22.31]
May 22 15:46:23 statek sendmail[14278]: k4MDkNfs014278:
	<l at batory.org.pl>... User unknown

My filter (it is customized and hacked filter based on
suggested-minimum-filter-for-windows-clients 1.87):
	http://ludzie.batory.org.pl/~tometzky/mimedefang/mimedefang-filter
It does not use SpamAssassin.

perl-5.8.3
sendmail-8.13.6

This is on an ancient linux-2.2.27-rc2 on libc-5 so it
can just be a system fault - I'm slowly migrating this to a newer
system but this is a big pain because of lots of libc-5 / python-1.4,
no-source-available custom software.

Regards
Tometzky
-- 
...although Eating Honey was a very good thing to do, there was a
moment just before you began to eat it which was better than when you
were...
                                                      Winnie the Pooh



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