I have a filter rule that checks the X-Spam-Bars header for my messages, and has as its action "Set Status: Junk". Will this do what you want?
-- Sam Morris http://robots.org.uk/ PGP key id 1024D/5EA01078 3412 EA18 1277 354B 991B C869 B219 7FDB 5EA0 1078
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