[Mimedefang] Performance tuning MD w/ SA

[listuser at neo.pittstate.edu]

Can anyone offer any tips on performance tuning MIMEDefang or
SpammAssassin running with it on a Sendmail 8.12.6 box?  I can not figure
out if Razor is running with SA.  I also can't tell if SA is making
redundant queries to DNSBLs that Sendmail is already doing.  I don't
believe it's doing either.  I did a quick check on my querylog output from
bind and didn't see any queries to anything odd (although there was a TON
of data to parse).  I would like SA to query foreign country DNSBLs (zones
will be on our local DNS box) and add to the score based on those.  I'm
already scanning about as many DNSBLs as I dare via Sendmail.

I'm preparing to cleanse the box of CPU-consuming procmail recipes,
cutting it down to the bare minimum.

I am running the multiplexor (default with 2.26?).  Should my multiplexor
settings match my sendmail settings?  Here are a few of the more relevant
lines.

define(`confDELAY_LA',`8')
define(`confQUEUE_LA',`10')
define(`confREFUSE_LA',`20')
define(`confMAX_DAEMON_CHILDREN',`60')
define(`confCONNECTION_RATE_THROTTLE',`20')
define(`confMAX_RCPTS_PER_MESSAGE',`200')dnl
define(`confBAD_RCPT_THROTTLE',`3')
define(`confCONNECTION_RATE_THROTTLE',`3')dnl
dnl FEATURE(`delay_checks', `hater')

Whoops, I already see one mistake.  I've got a duplicate line in there.
I'll fix that real quick.  

On another thought, should Sendmail point to mimedefang.sock or
mimedefang-multiplexor.sock for the milter socket?  I'm currently pointing
to mimedefang.sock and it's working.

If anyone can think of any other performance tuning ideas, I'd love to
hear them.

Thanks
Justin