Access Security Manager, all versions
When you modify the "Where to search" option in Access Security Manager, the radio button for "All Mailboxes on this server" is greyed out.
This only happens when Access Security Manager is connected to a mailbox located on Exchange 2010. Exchange 2010 no longer associates mailboxes with individual servers. Mailboxes are now associated with Database Availability Groups which can exist on multiple servers.
This is by design.
Link To This Page:https://www.barracudanetworks.com/kb?id=50160000000uQh4