Thanks for posting back.
your network configuration have no problem,the external Interface sholud
have internal DNS and Wins configuerd.
It is most likely related to ISA server on the SBS server,Please stop all
ISA related service to see if it make any difference.you can also check all
the ISA policy and rules.
If issue persists,rerun CEICW,
825763 How to configure Internet access in Windows Small Business Server
In addition,what's the other difference(configuration and software
installed) between workgroup machine and domain machine?
Have a nice day!
Jacky Luo (MSFT)
Microsoft CSS Online Newsgroup Support
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