I found the information at http://www.magma.com.ni/~jorge/spamassassin.html
helpful.
Scroll down to "Filtering during queue processing" and replace each
occurrence of spamassassin with spamc. It worked perfectly for me. You may
have to setuid the new qmail-queue and qmail-queue.orig to run as qm
Hello,
Will email given an extremely low score by the "all_spam_to" directive be
used by the Bayesian auto-learning function? I'm concerned that the volume
of email handled by our support department may be adversely skewing the
Bayesian database.
Thanks!
Jeremy Smith
Senior N