http://www.macnn.com/articles/03/09/10/postoffice.adds/
PostOffice adds SpamAssassin, other features
updated 09:50 pm EDT, Wed September 10, 2003
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Tenon today released plugin, which filters SPAM using a Bayesian Classification scheme (and other techniques); it requires no configuration and can be used along with Tenon's built-in SPAM filtering to create personalized header filters, block specific IPs and to take advantage of specific real-time black hole sites. A $300 "starter" package supports 100 mailboxes and 10 lists.
