I have a user whose Bayesian filtering eventually got way too specific and email was beginning to be marked spam that should not have. The crazy thing is this user NEVER logged in to Plesk and defined spam and ham emails. He just uses Outlook. So I'm wondering how spam and ham got defined over 800+ times without doing it from inside of Plesk. Does Spam Assassin still learn from your activities with your email once it's been downloaded via POP3 to your Outlook inbox?