Commtouch Spam Booster is a premium filter integrated directly into Spam Blocker but it has its own rack element for ease of management

Integration with Spam Blocker enables Commtouch Spam Booster users to enjoy the following additional benefits:

Filter SMTP, POP, & IMAP

Filter Inbound & Outbound Messages

Spam Logging

Individual Spam Quarantines for each Mailbox

Safelist Messages from the Spam Quarantine

HTML Reporting: Network Level Overview

PDF Reporting: Spam Incidents