Setting IP Access Restrictions to the Server

You can grant or deny SMTP site access to specific IP addresses. By default, the site is accessible to all IP addresses. You can set restrictions by specifying a single IP address, a group of addresses using a subnet mask, or a Windows NT Server domain name.

To set IP address access restrictions

1. Select the Directory Security property sheet in Internet Service Manager.
   
2. Under IP Address and Domain Name Restrictions, choose Edit.
   
3. Under IP Address Access Restrictions, select Granted Access or Denied Access.
   
4. To add a new restriction, select Add, and then type the address information.
   
5. To delete an existing restriction, select a listing and select Remove.
   
6. To edit an existing restriction, select a listing, and then select Edit.

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