The X.400 reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

X.400

In computing, X.400 is a standard promulgated by ISO for the exchange of email. Like most ISO standards to do with application-level networking, it never caught on, perhaps due to its complexity compared with SMTP.

This is the "X.400" reference article from the English Wikipedia. All text is available under the terms of the GNU Free Documentation License. See also our Disclaimer.