Defense Message System

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The Defense Message System or Defense Messaging System ( DMS ) is a system for secure e-mail and directory services used by the US Department of Defense. DMS was introduced to replace the AUTODIN network and is based on implementations of the OSI X.400 mail standard, X.500 directory services and X.509 public key certificates with many extensions to meet the special requirements of a to meet military communication system.

DMS is sometimes used in conjunction with third-party products, such as the US Navy's DMDS ( Defense Message Dissemination System ), which accepts messages based on certain criteria and forwards them to those who are expected to respond to the message becomes. This combination has had great success, especially in the upper command levels, as the staff no longer have to wait for the operator to manually route the message to the correct subscriber. The Navy also uses the Navy Regional Enterprise Messaging System (NREMS). NREMS uses an AMHS backend to send secure organization messages to the naval commands via a web interface.

The US Army's DMS version runs on an AMHS platform both for CONUS and for areas outside the USA. The Pentagon Telecommunications Center (PTC) is the distribution point for CONUS operations; there are also various AMHS installations for strategic OCONUS message exchange (outside the USA). In the tactical environment of the US Army there is also the independent Tactical Message System (TMS), which is also based on an AMHS platform and is intended to provide a secure exchange of messages in the event that OCONUS AMHS installations cannot be reached.

The DMS is coordinated by the Defense Information Systems Agency (DISA). Tests began in 1995. DMS relies on many third-party products such as DMDS, DMDS Proxy MR, CP-XP (the CommPower XML Portal), AMHS ( Automated Message Handling System ), MMHS ( Military Message Handling System ) and CMS 1.0.

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