1.5 Prerequisites/Preconditions

This protocol assumes that a connection was already made using the EMSMDB RPC interface, as specified in [MS-OXCRPC], or the EMSMDB HTTP interface, as specified in [MS-OXCMAPIHTTP]. The connection process authenticates and exchanges version information between the server and client.

Successful communication between the client and server requires that the client is already configured with information about the mailbox and server. Several ROPs make use of a distinguished name (DN) as an input field to specify a mailbox or a server.