The "turf list" is set on the Filtering tab of the Message Delivery Properties dialog box. You can gain access to this dialog box by using Global Settings in Exchange System Manager. When turf list filtering is enabled on an SMTP virtual server, e-mail received from anyone on the turf list is filtered out.

For example, if an SMTP virtual server is connected to the Internet, you can filter e-mail from one or more outside users who are trying to gain access to the organization by using a particular IP address. If, however, a different IP address is configured on the same virtual server (for example, for internal users who connect to the Internet), you may need to enable filtering for connections on this IP address. This is why turf list filtering is set in the Identification dialog box.

To enable message filtering on a virtual server:

1. In Exchange System Manager, click the virtual server that you want to configure.
2. On the Action menu, click Properties.
3. On the General tab, click Advanced.
4. In the Advanced dialog box, type the IP address to which you want the filter applied, and then click Edit.
5. In the Identification dialog box, click to select the Apply Filter check box, and then click OK.
6. Click OK, and then click OK again to close the virtual server properties.

The information in this article applies to:

• Microsoft Exchange 2000 Server