MailScanner – spam.assassin.prefs.conf

If you are upgrading from an older install be very careful with the spam.assassin.prefs.conf, as the latest version that ships with MS has a number of changes in it that can cause issues with your Bayes’ settings ie. location of the files
With older installs you may have place the files in:
/var/spool/spamassassin
you would have set the path to bayes to be:
/var/spool/spamassassin/bayes
The new default settings in the file work on a slightly different basis, so you should check carefully before implementing them.