[Mimedefang] Mimedefang multiplexor error

[Duong, Dat (NIH/CIT)]

Hi,

I have problems with mimedefang multiplexor and or filter.  I've installed
on couple mail server with exact configurations (filter, etc). On one of my
heavy loaded server, the mimedefang multiplexor disappear after a while.
On other server it works fine.
The version I used 2.21.  After looking at the list, I realized that 2.25
probably fix my problems so I upgraded to 2.25.  However the problem still
occurs after about an hour worth of heavy email traffic.  Note that this
problem
does not occur on my lightly loaded server.  I'm not sure whether it is the
load
or traffic pattern (attachments, etc) that cause the problems.  On a heavy
loaded
mail server, there is no problem with either CPU or memory, since I
constantly monitor
system resource using top. (CPU never exceed 20% utilization and there is
plenty of
memory so that swap is not even utilized yet when this problem occurs).

Some of the log entries are included below. I really like mimedefang
solution but
this condition prevents me from deploying it.  It is always reproducible.
My filter
is very simple since I remove all but attachment striping functions (i.e. no
SA, etc.).  
Any help would be much appreciated.


Nov 15 16:53:11 viper mimedefang[12270]: Error from multiplexor: 
Nov 15 16:53:11 viper mimedefang-multiplexor: Starting slave 1 (pid 14178)
(8 running): About to perform scan
Nov 15 16:53:23 viper mimedefang[12270]: Filter failed.  Message is in
/var/spool/MIMEDefang/mdefang-3DD56CAC-1
Nov 15 16:53:23 viper mimedefang-multiplexor: Slave died prematurely --
check your filter rules
Nov 15 16:53:32 viper mimedefang-multiplexor: Killing slave 3 (pid 11406):
Slave has processed maxRequests requests
Nov 15 16:53:39 viper mimedefang[4031]: MIMEDefang-2.25: thread_create()
failed: 11, try again
Nov 15 16:53:39 viper mimedefang-multiplexor: Reap: Idle slave 3 (pid 11406)
exited due to SIGTERM as expected.
Nov 15 16:53:45 viper mimedefang-multiplexor: Starting slave 3 (pid 14639)
(8 running): About to perform scan
Nov 15 16:53:46 viper sendmail-25[14567]: gAFLrdM3014567: Milter
(mimedefang): read returned -1: Connection reset by xx.xx.xx
Nov 15 16:53:46 viper mimedefang[4031]: MIMEDefang-2.25: thread_create()
failed: 11, try again
Nov 15 16:53:51 viper mimedefang-multiplexor: Starting slave 7 (pid 14709)
(9 running): About to perform scan
Nov 15 16:53:52 viper sendmail-25[14567]: gAFLrdM3014567: Milter
(mimedefang): to error state
Nov 15 16:53:51 viper mimedefang[13603]: Error from multiplexor: 
Nov 15 16:53:54 viper sendmail-25[14568]: gAFLrdM3014568: Milter
(mimedefang): read returned -1: Connection reset by xx.xx.xx
Nov 15 16:53:58 viper mimedefang-multiplexor: Starting slave 9 (pid 14795)
(10 running): About to perform scan
Nov 15 16:53:59 viper sendmail-25[14567]: gAFLrdM3014567: Milter
(mimedefang): init failed to open
Nov 15 16:54:03 viper sendmail-25[14568]: gAFLrdM3014568: Milter
(mimedefang): to error state