[Spambayes] Spambayes classification failed!

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    Carl> I archive all of my spam so that when Spambayes needs to
    Carl> retrained, I have the data bank.

I find that unnecessary.  Just train on unsures and mistakes.  Every now and
again delete all your training data and start from scratch (or just save the
last few hams and spams and train on them to get started).  It quickly
(after just a few of each kind) starts doing a very good job of classifying
your mail.

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