Postfix/spamassassin loop

[Justin Cook]

Oops. I'm a bit of a novice user and I'm setting up SA under Postfix for the first time. Mail sent while SpamAssassin is running delivers fine, but anything inbound (or mail sent to a local address from a local IP) fails with a "max hops reached" error. It turns out Spamassassin is calling postfix's Sendmail bin, which calls spamassassin, and so on. What should I be looking for here? Cheers!