DNS resolving bypass

Hi

Please verify my thoughts.

One of my customers wants TMG to bypass DNS resolving, but only for external hostnames. Internal ones should be resolved as usual in internal DNS server. Requests for external websites should be send directly to upstream proxy without resolving in internal DNS.

Can it be done by setting SkipNameResolutionForAccessAndRoutingRules property as described in https://msdn.microsoft.com/en-us/library/ms826264.aspx ?

As far i I understand SkipNameResolutionForAccessAndRoutingRules will skip resolution for all requests, even if it is internal hostname.