We recently upgraded our domain controllers from AD2003 to AD2008 R2. We are running Exchange 2003. After the upgrade we found that when we added a user via 08 R2 it did not prompt us to add the corresponding mailbox. We then found that we could not install the Exchange 2003 system manager on the AD 08 R2 system so we resorted back to our old Domain controller, AD Removed, to utilize the User and computer installation on that computer.
We are now planning on upgrading to Exchange 2010. For the above issue is it simply installing the Exchange 2010 component on the AD server to enable this feature in Active Directory?