[Mimedefang] Trying to understand MD's log entries

[Weyland]

I see that MD is getting a lot of timeout errors that 
have suddenly started happening since a few days ago.
I'm unclear on how to check to see if my hardware simply 
isn't up to the task, or if there's something that needs attention.

We've received 1000 messages since 12:00AM 
Saturday until now, with 700 timeout errors.

This is for 10 users being used as a test base,
running on a 500Mhz/256M RAM machine.

Can someone help me out?

Snippet of log file below.

Thanks,

Weyland


Jul 15 09:07:51 MAILBOX sendmail[28579]: g6FD7jwg028579: Milter add: header: 
X-Scanned-By: MIMEDefang 2.15 (www dot roaringpenguin dot com slash 
mimedefang)
Jul 15 09:07:58 MAILBOX sendmail[28584]: g6FD7jwg028579: to=<SJM at ZZZ.com>, 
ctladdr=<dbp at mydomain.com> (504/504), delay=00:00:07, xdelay=00:00:07, 
mailer=esmtp, pri=30537, relay=mailin-03.mx.aol.com. [205.188.158.25], 
dsn=2.0.0, stat=Sent (OK)
Jul 15 09:07:59 MAILBOX sendmail[28585]: g6FD7uu7028585: 
Authentication-Warning: MAILBOX.PILL.BOX: spamcatch set sender to 
mimedefang at mydomain.com using -f
Jul 15 09:07:59 MAILBOX sendmail[28585]: g6FD7uu7028585: 
from=mimedefang at mydomain.com, size=1573, class=0, nrcpts=1, 
msgid=<200207151307.g6FD7uu7028585 at MAILBOX.PILL.BOX>, 
relay=spamcatch at localhost
Jul 15 09:08:05 MAILBOX mimedefang-multiplexor: Killing slave 0 (pid 28532): 
Busy timeout
Jul 15 09:08:05 MAILBOX mimedefang[28578]: Error from multiplexor: ERR Filter 
timed out - check filter rules or system load
Jul 15 09:08:05 MAILBOX sendmail[28577]: g6FD7Nwg028577: Milter: data, 
reject=451 4.7.1 Please try again later
Jul 15 09:08:05 MAILBOX sendmail[28577]: g6FD7Nwg028577: to=<dbp at localhost>, 
delay=00:00:39, pri=30751, stat=Please try again later
Jul 15 09:08:05 MAILBOX mimedefang-multiplexor: Reap: Idle slave 0 (pid 
28532) exited due to SIGTERM as expected.