How the Messaging Security Agent Scans Email Messages

The Messaging Security Agent uses the following sequence to scan email messages:

  1. Scans for spam (Anti-spam)

    1. Compares the email to the Administrator’s Approved/Blocked Senders list

    2. Checks for phishing occurrences

    3. Compares the email with the Trend Micro supplied exception list

    4. Compares the email with the Spam signature database

    5. Applies heuristic scanning rules

  2. Scans for content filtering rule violations

  3. Scans for attachments that exceed user defined parameters

  4. Scans for virus/malware (Antivirus)

  5. Scans for malicious URLs