To find screening rules:
Right-click anywhere on the Screening tab, then select Find Screening Rules.
In the resulting dialog box, enter a string to search for in the Search For field. Select Use Regular Expressions if you want the search to treat the string as a regular expression.
Select check boxes to search in the screening rule's text, name, or both.
Click Find. The dialog box displays the name, addresses to match, and body of all screening rules found.