SurfControl's RiskFilter: Page 5 of 6

The Content Dictionary groups terms by subject headings, such as "adult," "hate/speech," "medical" and "violence." It even includes terms with pattern matching for common misspellings, such as "*\V1agra*" for Viagra.

You can use three different operators--, and --to create rules within four different filters that contain the filtering rules or policy. You can use an operator numerous times within a rule but cannot mix and match the operators. The more complex the rule and the greater number of filters, the slower the message processing will be. Keep rules as simple as possible, and direct them at resolving single issues.

To test custom rules, I created a filter with a number of different patterns to identify and isolate messages sent with a Social Security number in the body: SSNSSN ###-##-####SSN ###?##?####. When I applied the rule, it successfully blocked messages with an SSN number in the body.

Managing the Messages