Digest authentication

Hi

In Digest Authentication it is written
"The user and the server running IIS must be members of, or be
trusted by, the same domain."

So the machine which is trying to access the Web Service should be
logged with the same domain or it can be any domain.

I think only the credentials passed should be of the same or trusted
domain. Machine could be logged on any Domain. Is it so?

Sunil Virmani