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Check sender account: Select to allow CS-500 checking sender's account when it receives the mail, if the
sender's account is faked, CS-500 will treat the mail as the spam.
Check sender IP address in RBL (Realtime Blackhole List): Select this function to allow CS-500 checking
mail with RBL list.
Add score tag to the subject line: If select this function, all received mail will be added a score tag in the
mail subject.
Action of Spam Mail: When CS-500 filters the spam mail, there are three kinds of actions for Internal Mail
Server and one action for External Mail server to arrange the spam mail:
Delete the spam mail: If select this option, the spam mail will be deleted without any notification.
Deliver to the recipient: Pass the mail to the recipient, and add a "SPAM" in the mail subject. This
function is available for Internal and External Mail Server.
Forward to: You can configure CS-500 to forward spam mail to a specific mail account; it will be easily to
manage the spam mail.
Configure an Anti- Spam setting
After setup the relevant settings in Mail Relay function of Configure, add the following settings in this
function:
1. The Mail Server is placed in Internal (LAN or DMZ)
2. The threshold score: Enter 5
3. Add the message to the subject line: Enter ---spam---
4. Select Add score tag to the subject line
5. Select Deliver to the recipient
6. Click OK.
4.5.2.2 Rule
The Content Security Gateway's Administrator may use the rule setting to classify the spam mail based on a
certain condition. The rule also can allow CS-500 to record the mail type by auto-learning system to judge the
spam mail.
Click on Mail Security in the menu bar, then click on Rule below the Anti-Spam menu. The Rule window will
appear.
Content Security Gateway User's Manual
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