I’ve been asked by my friend on this question:
I have windows Server 2008 Active Directory, can Install Exchange 2003 in Windows 2003 in separate machines or servers?
Yes, you can.
1. I test with installation Active Directory of Windows Server 2008 R2 with Forest and domain functional level to Windows 2003.
2. Install Windows Server 2003 and Exchange 2003. Run Schema Preparation and Domain Prepare at Windows 2003 that you are going to install Exchange 2003.’
3. Run the Setup and follow the instruction.