I am instlling exchange server 2007 in my existing forest that has exchange server 2003. I have run "setup /pl", "setup /ps", "setup /prepareAD", and "setup /PD" I know that some are redundant however I wanted to be sure after each phase.I am planning on installing exchange server on two boxes, 1) to run mailbox and hub transport. and 2) to run Client Server Access (CAS) and OWA and outlook anywhere.do I need to run "ServerManagerCmd -i RSAT-ADDS" on both server 1) and 2), or is that only needed for the domain controller before extending the forest/domain?Thanks,M

Hi,You only need to install the RSAT-ADDS on the server from which you are going to extend the schema.Leif

Thats what I thought,would that also have to be run if that server was already a domain controller?(the active driectory services is already installed if its a domain controller... Right?)thanks,M

Hi,RSAT -ADDS st is not the active directory services but the active Remote Server Administration Tool - Active Directory Domain Services Leif