How to Format Your Destination List
Always enter domains in this format: domain.com. Secure Access does not support this format: www.domain.com.
Using the correct format ensures that*.domain.com is included in your destination list (a wildcard is implicit). However, if you only want to block subdomain.domain.com, you must be more specific when you define the entry. For information about wildcards, see Wildcards in Destination Lists.