If AgendaX is installed on a subnet of your Exchange Server Active Directory, AgendaX might have difficulty to connect to the Exchange Servers. You might also not be able to ping the CAS array on Exchange 2010+, while pinging individual mailbox servers works fine. In this case, it could be that you are using Windows Network Load Balancer (WNLB) and you will need to statically assign the ARP entry in your router. More on this topic can be found here: http://social.technet.microsoft.com/Forums/da-DK/exchangesvravailabilityandisasterrecovery/thread/175551e6-d241-42d0-b8ab-d4d435554923
