We a running a Windows 2000 network with Exchange 5.5. Currently we are migrating from one Exchange 5.5 SP4 box to another. All users have been moved and all public folders have been replicated. The only thing left on the old Exchange 5.5 server is the CCMAIL connector and MSMAIL connector (with Free/Busy service). My question is do I need the free/busy service to view user availabily on our Outlook 2000 client calendars? Is it necessary to recreate the Free/Busy connector on the new server if I have no 16-bit MSmail clients?