TMG 2010 Name Resolution

HI All,

  I cannot update the Windows Server directly or via the WSUS. 

 Internale Nic got the LAN DNS Server but it cannot resolve to outside?

C:\Users\Administrator>nslookup www.google.com
DNS request timed out.
    timeout was 2 seconds.
Server:  UnKnown
Address:  10.1.1.5

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.

LAN WSUS Server IP: 10.1.1.10

External Interface got the Internet connectivity

As