I've been trying to publish OWA 2007 via ISA server 2006, so that I can achieve true single Sign On (SSO) for clients that are a member of the Active Directory forest. The scenario is as follows:
3 domain forest, with empty root, resource domain (lets call that Domain A) , and an accounts & workstations domain (lets call that Domain B). ISA and Exchange are in Domain A, users & their workstations in Domain B. I want it so that when a user accounts logs onto a computer in Domain B, using an account form Domain B, they can open an IE browser and go straight in to OWA over SSL without being prompted again to authenticate. I've managed to configure Outlook Anywhere to do this, but not OWA. I thought this was possible, but I can't find much on the web about it, and I've had trouble when trying to work it through myself.
Does anyone know whether this can be achieved using the setup I have?