This module filters spam using the statistical message
processing algorithm. The filter determines the probability of each
message containing spam. If the estimated probability exceeds the
set limit, the filter blocks the message. The probability is
estimated based on the recorded statistics of clean and spam
messages. Entensys own design of the Bayesian algorithm allows the
filtering module to learn from the Cloud Antispam performance, the
administrator's actions (marking a message as "not spam" on the
Monitoring page) or users' actions provided IMAP integration is
enabled.