Hello,
I've Migrated all my accounts over to Exchange 2013 from my 2010 box and everything is working great..............so far my Exchange 2010 box is still in use routing mail through this box to my 2013 box..............
On my Exchange 2010 I have forefront installed to deal with spam etc..........I know this product has been discontinued but should I leave my 2010 box in place to deal with spam?
Ideas?