Military Message Handling System (MMHS) is a profile and set of extensions to

X.400 X.400 is a suite of ITU-T Recommendations that defines the ITU-T Message Handling System (MHS). At one time, the designers of X.400 were expecting it to be the predominant form of email, but this role has been taken by the SMTP-based Internet e-m ...

for messaging in military environments. It is

NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...

standard STANAG 4406 and

CCEB The Combined Communications-Electronics Board (CCEB) is a five-nation joint military communications-electronics (C-E) organisation whose mission is the coordination of any military C-E matter that is referred to it by a member nation. The member nat ...

standard ACP 123. It adds to standard X.400 email support for military requirements such as mandatory access control (i.e. Classified/

Secret Secrecy is the practice of hiding information from certain individuals or groups who do not have the "need to know", perhaps while sharing it with other individuals. That which is kept hidden is known as the secret. Secrecy is often controvers ...

/ Top Secret messages and users, etc.). In particular it defines a new message format, P772 that is used in place of X.400's interpersonal message formats P2 (1984 standard) and P22 (1988 standard). MMHS specifications are implemented by several X.400 vendors, particularly those located in Europe, such as Raytheon UK,

Boldon James Boldon James is a UK-based software company incorporated in February 1985, and specialising in data classification and secure messaging solutions aimed primarily at the commercial, defence, intelligence and government marketplaces. The company is ...

, Deep-Secure,

Thales Group Thales Group () is a French multinational company that designs, develops and manufactures electrical systems as well as devices and equipment for the aerospace, defence, transportation and security sectors. The company is headquartered in Paris' ...

Nexor Nexor Limited is a privately held company based in Nottingham, providing product and services to safeguard government, defence and critical national infrastructure computer systems. It was originally known as X-Tel Services Limited. History Ne ...

, Cassidian and Isode. Several RFC are supported: RFC 6477
- Registration of Military Message Handling System (MMHS) Header Fields for Use in Internet Mail

Implementations

References

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Implementations

See also

References