By default, Mail Scan can only scan new messages sent through port 110 in the Inbox and Junk Mail folders. It does not support secure POP3 (SSL-POP3), which is used by Microsoft Exchange Server 2007 by default.

Mail Scan cannot detect security risks in IMAP messages. Use the Messaging Security Agent (Advanced only) to detect security risks and spam in IMAP messages.

Scans floppy disks during shutdown

Detects malicious code, such as bots, in compressed files

For details, see IntelliTrap.

Behavior Monitoring scans the system memory for suspicious processes and Real-time Scan maps the process and scans it for malware threats. If a malware threat exists, Real-time scan quarantines the process and/or file.

A compressed file has one layer for each time it has been compressed. If an infected file has been compressed to several layers, it must be scanned through the specified number of layer to detect the infection. Scanning through multiple layers, however, requires more time and resources.

Blocks processes that attempt to exploit known vulnerabilities in commercially available products based on the Common Vulnerabilities and Exposures (CVE) system