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EntityQ300851· pop 16· linked from 67 articles

X.400 is a suite of ITU-T recommendations that define the ITU-T Message Handling System (MHS).

In the Vinony graph

Vinony's link graph records 67 inbound references to X.400, and connects out to NATO, email and International Standard Book Number.

Vinony files it under Application layer protocols, Email and ISO standards.

Vinony links it to 16 Wikipedia language editions.

~14 min read

Encyclopedic overview

11 sections
Contents
  • History
  • Implementation
  • Addressing
  • X.500 directories
  • See also
  • Notes
  • References
  • General references
  • Further reading
  • ITU-T X.400 Recommendations
  • External links

X.400 is a suite of ITU-T recommendations that define the ITU-T Message Handling System (MHS).

At one time, the designers of X.400 expected it to be the predominant form of email, but this role has been taken by SMTP-based Internet e-mail. Despite this, it has been widely used within organizations and was a core part of Microsoft Exchange Server until 2006; variants continue to be important in military and aviation contexts.

Excerpted from Wikipedia’s “X.400” article, available under the CC BY-SA 4.0 licence.

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