Where is my spamassassin log?

I’m trying to get a handle on what’s going on around my server. Can anyone tell me where spam assassin stores it’s log file? I’ve got a vanilla install of virtual min on Fedora Core 6.

I would have thunk it’d be in /var/log/spamassassin but that isn’t the case.

I also checked in a messages log. It contained messages from dovecot and postfix but nothing from spamassassin.