Recently, I wrote a post about teaching your MDaemon Inbox to recognize spam using the Bayesian learning feature. This feature helps to train the spam filter to be more accurate over time by feeding it samples of spam and non-spam messages. SecurityGateway also includes Bayesian learning features (in addition to many other security features designed to keep spam, viruses, malware and phishing attacks from hitting your mail server). Today, I’ll be explaining how to use these features to teach SecurityGateway how to get better at recognizing spam (false negatives – spam messages that were not filtered out) and non-spam (false positives – legitimate messages that were marked as spam).