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)