ssaging, standard> (MHs) The standard defined by ITU-T asX.400 and by IsO as {Message-Oriented Text Interchange standard} (MOTIs). MHs is the X.400 family of services and protocols that provides the functions for global {electronic mail} transfer among local mail systems and {MTA}s. It is used by Compuserve, among others. (1996-09-25)