Chapter 15 Unified Threat Management for FortiOS 5.0 : Email filter
  
Email filter
This section describes how to configure FortiGate email filtering for IMAP, POP3, and SMTP email. Email filtering includes both spam filtering and filtering for any words or files you want to disallow in email messages. If your FortiGate unit supports SSL content scanning and inspection, you can also configure spam filtering for IMAPS, POP3S, and SMTPS email traffic.
The following topics are included in this section:
Email filter concepts
Enable email filtering
Configure email traffic types to inspect
Configure the spam action
Configure the tag location
Configure the tag format
Configure FortiGuard email filters
Configure local email filters
Email filter examples