Configure the tag location
When the spam action is set to Tagged, the Tag Location setting determines where the tag is applied in the message.
To configure the tag location
1. Go to Security Profiles > Email Filter > Profile.
2. The default email filter profile is presented. To edit another profile, select it from the drop down in the Edit Email Filter Profile title bar.
3. Select Enable Spam Detection and Filtering.
4. Select the types of email that you want the FortiGate unit to examine when using this email filter profile.
5. Select Apply.
6. The Tag Location row has two options for each traffic type. Note that if the spam action for SMTP traffic is set to discard, the tag location will not be available. Select the tag location:
• Subject: The FortiGate unit inserts the tag at the beginning of the message subject. For example, if the message subject is “Buy stuff!” and the tag is “[spam]”, the new message subject is “[spam] Buy stuff!” if the message is detected as spam.
• MIME: The FortiGate unit inserts the tag into the message header. With most mail readers and web-based mail services, the tag will not be visible. Despite this, you can still set up a rule based on the presence or absence of the tag.
7. Select Apply.