Originally Posted by JamesNT
SBS 2011 is not longer for sale. You will need to get Windows Server 2012 Essentials and a separate copy of Exchange.


You will need to add a copy of Server 2012 to that basket. Running Exchange 2013 on Server 2012 Essentials isn't supported. It's also unclear if you need Server CALs for Server 2012 in that configuration.