Configuring an Expression

Configure keyword and regular expressions to enable InterScan™ Messaging Security Appliance (IMSA) to scan email message content. You can add several expressions to a list, and create your own.

To create an expression list and configure expressions:

  1. Click Add or Edit from the Keyword Expressions screen. The configuration screen for keyword expression lists appears.

  2. Next to List name, type a descriptive name.

  3. Next to Match, select one of the following that specifies when IMSA takes action:

  4. To create an expression, click Add. The Add Keyword Expression list appears.

  5. Type the keywords. For a partial match, just type the keyword. To specify an exact match, use "\s" (without the quotes) before and after the key word. For example:

  1. If you selected Only when combined score exceeds threshold, select a score from the drop down box.

  2. Click Save. The configuration screen for keyword expression lists reappears with the expression in the list.

  3. To instruct IMSA to consider the capitalization of email content when it uses the filter, select the check box under Case sensitive.

  4. Click Save to continue managing expression lists.

 

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