Site home page
Get alerts when Linktionary is updated
Book updates and addendums
Get info about the Encyclopedia of Networking and Telecommunicatons, 3rd edition (2001)
Download the electronic version of the Encyclopedia of Networking, 2nd edition (1996). It's free!
Contribute to this site
Electronic licensing info
X.400 Message-Handling System
Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.
The ITU (formerly CCITT) defined the X.400 MHS standard, an electronic system for exchanging messages among store-and-forward mail systems. In ISO terminology, X.400 is called MOTIS (Message-Oriented Text Interchange System). The goal of the standard is to provide compatibility among multi-vendor products and interfaces as well as public and private message services.
X.400 was first introduced in 1984 and has been through several enhancements. It outlines the protocols, procedures, components, terminology, and testing methods required to build interoperable e-mail systems. X.400 is based on a distributed client/server model. Internet mail has now become the de-facto mail standard.
Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.