[Mimedefang] Error from multiplextor: ERR No response from slave

[Paul Houselander (SME)]

Hi

Ive been running mimedefang for a while now, with I thought not really any
issues.

I relay e-mail for quite a few domains and I use it to check for valid
recipients using Ray Ferguson's fancy version: - Check Non-Local Addresses
for Relay as my filter.

Ive noticed a problem, every now and then in my sendmail log I see

Mar 30 23:05:06 geneva sendmail[2724]: m2UM56oY002724:
from=<EmanuelherdsmanPhelps at sckcen.be>, size=5752, class=0, nrcpts=1,
msgid=<4IX876EJXVWDA207 at sckcen.be>, proto=ESMTP, daemon=MTA, relay=x.x.com
[x.x.x.x]
Mar 30 23:05:06 geneva mimedefang-multiplexor[7538]: Slave 10 stderr: uu
decoding: no begin found
Mar 30 23:05:06 geneva mimedefang.pl[7538]: Clearing handles.
Mar 30 23:05:06 geneva mimedefang.pl[7538]: bye bye.
Mar 30 23:05:06 geneva mimedefang-multiplexor[7538]: Slave 10 died
prematurely -- check your filter rules
Mar 30 23:05:06 geneva mimedefang-multiplexor[7538]: Reap: slave 10 (pid
23345) exited normally with status 1 (SLAVE DIED UNEXPECTEDLY)
Mar 30 23:05:06 geneva sendmail[2724]: m2UM56oY002724: Milter: data,
reject=451 4.3.2 Please try again later
Mar 30 23:05:06 geneva sendmail[2724]: m2UM56oY002724:
to=<EmanuelherdsmanPhelps at sckcen.be>, delay=00:00:00, pri=35752, stat=Please
try again later

Whats strange is it doesn't appear to be random, if the same message is
tried later it gets the same response, but messages inbetween are fine?

I just can't seem to track down why its erroring, im using mimedefang 2.63
on Cent OS 5 (Final).

Any tips on what I should be looking for?

Kind Regards

Paul