Open source lightweight Messaging Handling Service (MHS X.419) and Interpersonal Messaging System (IPMS X.420). MHS was a very open system, it was popular in the early 1990s as a glue between proprietary email systems, competing standards-based SMTP and X.400. However, by 1996 it was clear that SMTP over the Internet would take over this role. However MHS/IPMS is a faster and has more telecomunication flavour than SMTP track of standards. Now MHS is used in avionics and in Military Message Handling System (MMHS, RFC 6477).

• Namdak Tonpa

OM A HUM