Anti-Spam

Worry-Free Business Security provides two ways to combat spam—Email Reputation and Content Scanning.

The Messaging Security Agent uses the following components to filter email messages for spam and phishing incidents:

Trend Micro updates both the engine and pattern file frequently and makes them available for download. The Security Server can download these components through a manual or scheduled update.

The anti-spam engine uses spam signatures and heuristic rules to filter email messages. It scans email messages and assigns a spam score to each one based on how closely it matches the rules and patterns from the pattern file. The Messaging Security Agent compares the spam score to the user-defined spam detection level. When the spam score exceeds the detection level, the agent takes action against the spam.

For example: Spammers often use many exclamation marks or more than one consecutive exclamation mark(!!!!) in their email messages. When the Messaging Security Agent detects a message that uses exclamation marks this way, it increases the spam score for that email message.

Users cannot modify the method that the anti-spam engine uses to assign spam scores, but they can adjust the detection levels used by the Messaging Security Agent to decide what is spam and what is not spam.