How smart is SpamAssassin when dealing with whitelisted / blacklisted email addresses and the bayes module? For instance, is it necessary to retrain email which is spam (and would have been marked as spam other than the whitelisting) if the sender or recipient address is whitelisted?
The bayes autolearner intentionally does not consider the white/blacklist settings, because doing so would mean an accidental error in your whitelist settings could cause your bayes DB to become heavily poisoned by spammers.
ie: the common mistake of adding "whitelist_from [EMAIL PROTECTED]" would very quickly result in a lot of spam being learned as ham, as many spammers forge your own email address, or another in your domain, as the sender. In order to fix the problem you'd probably have to wipe your whole bayes DB and start over again.