Creating email filter

Description is: To create a new filter, perform the following steps: In the Filters by Users table, click Manage Filters for the appropriate email account. Note: If you access this interface from cPanel"s Webmail interface, proceed to step 2. Click Create a New Filter. Enter a name for the filter in the Filter Name text box. Configure your filter"s rules and actions. Note: For detailed information on how to configure your filter, read our How to Configure Email Filters article. Click Create. Where does one put the string to look for in the incoming email (e.g. "@hansl.com")? Thanks from one who has tried. Hans L