The Exchange Server User Monitor (ExMon) RPC data indicates that the user '{3}' is performing bulk operations of type MAPI ...

The Exchange Server User Monitor (ExMon) RPC data indicates that the user '{3}' is performing bulk operations of type MAPI operation "{4}". This accounts for {0}% of this user's RPC processor usage. Typically, bulk operations are very expensive, but they are short-lived. They do not usually indicate a problem.