I have a procmail file in /etc
############### #/etc/procmailrc### :0fw | /usr/bin/spamc ###############
.M
Wait.. are you doing it via procmail, or via spammilter? Do one or the other, but do NOT do both.
Also, check your config for typos, run spamassassin --lint. The lint test should run quietly and not produce any output at all.
