Ng, staNdard> (MHS) The staNdard defiNed by ITU-T as X.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)