Theresa, I had the same problem. I eventually bagged the idea of doing this and just made the ISA box part of the domain. Beware when doing this.... shutdown all the services that are not needed (File Print Sharing, Client for MS networks, Remove IIS, etc...) Greg Foulks, MCP NewFound Technologies, Inc. http://www.nfti.com Email: greg.foulks@xxxxxxxx Voice: 614.318.5036 Fax: 614.318.5005 -----Original Message----- From: Theresa Call [mailto:tcall@xxxxxxxxxxxxxx] Sent: Friday, August 17, 2001 4:19 PM To: [ISAserver.org Discussion List] Subject: [isalist] Trust relationship http://www.ISAserver.org For added security I have set up our ISA server in a seperate forest from the other domains on the network. According to the Shinder "ISA bible" I will need to set up a one-way trust relationship with the ISA domain trusting the domain where the user and client computer accounts are located. How specifically do I accomplish this? When I establish a trust either direction the user domain verifies that all is ok, but the ISA domain comes back with an error that it can't find the RPC on the Primary Domain Controller. I've checked the services running on both domains and RPC appears to be functioning. Detailed help will be very much appreciated. Thanks! Theresa ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: greg.foulks@xxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')