Hi all, Can anyone help please. I am installing a new exchange server 2003. I want to install this on a member server in a child domain. there is a single forest and I have run forestprepand domainprep on the forest dc. i have also run domainprepon the dc of the child domain. Now I want to install exchange on a member server within the child domain but i get an error message saying 'setup encountered an error communicatig with the active directory...'. The child domain dc has 2 NICs (different subnets), one connects to the forest dc and one connects to the member server. Cheers.