sa-learn is a command-line tool used for training the [:BayesInSpamAssassin:Bayes] classifier.
Documentation for the current release: [http://spamassassin.apache.org/full/3.2.x/doc/sa-learn.html]
Look at
*["BayesInSpamAssassin"]
*[http://wiki.apache.org/spamassassin/FixingErrors?action=fullsearch&context=180&value=sa-learn&fullsearch=Text Search wiki for sa-learn]