Ok I got an ISA 2004 box up.. Seems to be running ok BUT.. If I go to an owa site by www.domain.com/exchange it prompts me to authenticate over and over and over But if I got http://server/exchange it works fine ('server' is the inside server name) (Exchange2003) Thoughts? I think I have ISA setup correctly to have proxy clients go directly to the servers for www.domain.com as well, so I didn't think the ISA server was causing the problem. But then then when I turn off my web proxy, the problem goes away.