A.Instructremoteuserstoconnecttotheire-mailbyusingRPC
B.InstructremoteuserstoconnecttoOutlookWebAccessbyusingonlyHTTPS
C.InstructremoteuserstoconnecttothecompanynetworkbyusingPPTPconnections
D.Instructremoteuserstoconnectdtotheire-mailbyusingRPCoverHTTPConfiguretheHTTPserverstorequireencryption.
参考答案：D
