XFOR: Configuring Message Filtering on the Internet Mail Service

The Internet Mail Service in Microsoft Exchange Server 5.5 with Service Pack 2 (SP2) or later installed has message filtering capabilities that you can configure within the Exchange Server Administrator program. Use the Message Filtering feature to add domains or users who are not allowed to deliver SMTP messages to your site.

To configure Message Filtering to restrict delivery of SMTP messages to your site:

1. Open the Internet Mail Service properties, and click the Connections tab.
2. Click Message Filtering.
3. Click Add.
4. To prevent a specific user from delivering messages to your site, type the user's alias and domain name in the following format:
   username@domainname.com
5. To prevent all users in a specific domain from delivering messages to your site, type the domain name in the following format:
   @domainname.com
6. If you want the Internet Mail Service to automatically delete junk e-mail messages, click to select the Delete messages instead of moving to turf directory check box.
7. If you want the messages to be saved in a "turf" folder, click to clear the Delete messages instead of moving to turf directory check box, and manually create the turf folder.
8. Save the changes, then start and restart the Internet Mail Service for the changes to take effect.

For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base: