I am prepairing a new install of Exchange 2010. First one I have done. The AD is a Server 2008 box. The Exchange will be installed on a Server 2008 R2 that is a member of the domain. Before I install do I need to Prepare the Active Directory Schema in any way for Exchange 2010? I know when I did Exchange 2007 on a Server 2003 box I had to. Hence the question. And if I need to, what steps do I need to perform? This will hopefully be a nice quick simple install. It will only be a 1 domain, with 15 - 20 mailboxes max. Nothing crazy. Also what ports on my firewall need to be open. We do want to utilize Outlook Anywhere, and OWA. No Edge Server.