Depending on the type of service your trying to reach behind the UAG, you would want your name resolution to work, one way or the other. If your application works IP based, not using Windows authentication, SSO, Delegation or anything that requires name
resolution then your fine - but then you should not be using the UAG as a solution.
Microsoft is conducting an online survey to understand your opinion of the Technet Web site. If you choose to participate, the online survey will be presented to you when you leave the Technet Web site.