We have a small enviornment, <50 users. Our current envoirnment is Exchange 2003 and our Domain Controller is on a Windows 2003 box.
We plan to replace our DC with a Window 2008 R2 Box and then replace our Exchange box with a Windows Server 2008 R2 box and Exchange 2010.
My question is, do we need to do this all at one time or can we upgrade the DC first then migrate to Exchange 2010?
Is there a step by step procedures out there for these migrations?