I'm getting more and more spam on the UUCP, NOBODY and MAIL user accounts (running on Debian Sarge with ISPconfig) Is it possible to get SpamAssassin to "mark" the send mail to these accounts? The way it is setup now, it does not look SpamAssassin is seeing the mail that is send to the 3 accounts!
You could create procmail recipes for these three users: http://www.howtoforge.com/howto_spamassassin_clamav_procmail