Tue, Jan 24 2012 23:53
Exchange 2010 sp2 on SBS 2011
So far the only Exchange 2010 sp2 official post known issue I've seen is this:
Event ID 4999 is logged on an Exchange Server 2010 Client Access server (CAS):
Filed under: Exchange
I've seen a few folks report a bit of bumpiness getting it installed on SBS 2011 but I've not see any abilty to repro this issue. Like anything, have a backup before you plan to roll it out.