Military Message Handling System
Military Message Handling System is a profile and set of extensions to X.400 for messaging in military environments. It is NATO standard STANAG 4406 and CCEB standard ACP 123. It adds to standard X.400 email support for military requirements such as mandatory access control. In particular it defines a new message format, P772 that is used in place of X.400's interpersonal message formats P2 and P22.
MMHS specifications are implemented by several X.400 vendors, particularly those located in Europe, such as Raytheon UK, Boldon James, Deep-Secure, Thales Group, Nexor, Cassidian and Isode.
Several RFC are supported:Implementations
