- Open Outlook Express by double-clicking your "Outlook Express" icon on your "Desktop" or by clicking the "Outlook Express" icon from the start menu.
- Select "Blocked Senders..." from "Message Rules" under the "Tools" menu.
- To add an email address to the "Blocked Senders List" click "Add...".
- Type in the email address or domain address you would like to block and click "OK".
- When you are finished adding email addresses or domains to your blocked senders list click "OK" to close the "Message Rules".