Installation prerequisites Exchange 2010 with 2008 R2 and 2003 AD.
1. .Net Framework 3.5.
2. 2007 Office System Converter.
3. Raise Domain Functional Level of “Active Directory Users and Computers” & “Active Directory Domains and Trusts” to “Windows Server 2003″.
4. Add windows 2008 R2 Server to AD.
5. Login as domain administrator and start the installation.
