debug: cannot use bayes on this message; db not initialised yet debug: bayes: not scoring message, returning 0.5 debug: bayes: 10024 untie-ing debug: bayes: 10024 untie-ing db_toks debug: bayes: 10024 untie-ing db_seen
and it does not use bayes. What might be causing this?
This message indicates that bayes could not be used in SCORING the message because the bayes database is entirely empty.
This is quite different from anything to do with wether or not SA would autolearn the message (autolearning is rather rare). Theoreticaly, even with the above message SA could decide to autolearn the message and this initalize the database, but so far it hasn't found an email worthy of such treatment.
That said, you should never rely entirely on autolearning as your only source of training. Badly poisoned bayes DBs are nearly always a result.
Prime your bayes DB with some hand training using sa-learn first. This will help prevent bad autolearning, and gives your bayes DB a considerable headstart.