Create a referral policy at o=isp. For information on referral policies, see the procedure Modifying a Referral Policy.
The referral policy must define http://www.example.com as the resource in the rule, and must contain a SubRealmReferral with example.com as the value in the referral.
Navigate to the sub realm example.com.
Now that the resource is referred to example.com by isp, normal policies can be created for the resource http://www.example.com , or for any resource starting with http://www.example.com .
To define policies for other resources managed by example.com, additional referral policies must be created at o= isp.