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<p>The <b>Defense Message System</b> or <b>Defense Messaging System</b> (<b>DMS</b>) is a deployment of secure <a href="Electronic_mail" class="mw-redirect" title="Electronic mail">electronic mail</a> and directory services in the <a href="United_States_Department_of_Defense" title="United States Department of Defense">United States Department of Defense</a>. DMS was intended to replace the <a href="Automatic_Digital_Network" title="Automatic Digital Network">AUTODIN</a> network, and is based on implementations of the <a href="Open_Systems_Interconnection" class="mw-redirect" title="Open Systems Interconnection">OSI</a> <a href="X.400" title="X.400">X.400</a> mail, <a href="X.500" title="X.500">X.500</a> directory and <a href="X.509" title="X.509">X.509</a> public key certificates, with several extensions to meet the specific needs of military messaging.
</p><p>DMS is sometimes operated in conjunction with third-party products, such as the Navy's DMDS (Defense Message Dissemination System), a profiling system that takes a message and forwards it, based on message criteria, to parties that are required to take action on a message. This combination has met with success with the upper echelons of command, since parties do not have to wait for messaging center operators to route the messages to the proper channels for action. The Navy also uses Navy Regional Enterprise Messaging System (NREMS). NREMS uses an AMHS backend to send secure Organizational Messages via a web interface to Naval commands.
</p><p>The US Army's version of DMS is run solely on an AMHS platform both for CONUS and OCONUS operations. The Pentagon Telecommunications Center (PTC) is the hub for CONUS operations and there are several AMHS sites OCONUS for strategic messaging. In the tactical environment the Army deploys an independent Tactical Message Systems (TMS) that is also built on an AMHS platform for secure messaging capability in austere environments when communications with OCONUS AMHS sites are unavailable.
</p><p>DMS has been coordinated by the <a href="Defense_Information_Systems_Agency" title="Defense Information Systems Agency">Defense Information Systems Agency</a> (DISA), and testing began in 1995. DMS has many third-party vendor products, such as DMDS, DMDS Proxy MR, <a rel="nofollow" class="external text" href="http://www.commpower.com/">CP-XP</a> (the CommPower XML Portal), AMHS (<a href="Automated_Message_Handling_System" title="Automated Message Handling System">Automated Message Handling System</a>), <a href="Military_Message_Handling_System" title="Military Message Handling System">MMHS</a>, and CMS 1.0.
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<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
<ul><li><a href="Defense_Switched_Network" title="Defense Switched Network">Defense Switched Network</a></li>
<li><a href="GOSIP" class="mw-redirect" title="GOSIP">GOSIP</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://www.disa.mil/services/dms.html">Defense Message System</a> at <a href="Defense_Information_Systems_Agency" title="Defense Information Systems Agency">Defense Information Systems Agency</a></li>
<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060926041433/http://jitc.fhu.disa.mil/washops/jtca/dms.html">Defense Messaging System</a> at <a href="Joint_Interoperability_Test_Command" title="Joint Interoperability Test Command">Joint Interoperability Test Command</a></li>
<li><a rel="nofollow" class="external text" href="http://www.globalsecurity.org/wmd/systems/dms.htm">Defense Message System</a> at GlobalSecurity.org</li>
<li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120330103437/https://www.cnic.navy.mil/navycni/groups/public/documents/document/cnip_049983.pdf">Navy Moving Towards Web-based Naval Messaging</a></li>
<li><a rel="nofollow" class="external text" href="http://findarticles.com/p/articles/mi_m0PAA/is_4_28/ai_n6118601/">PM DMS-Army streamlines tactical message system, receives defense acquisition executive recognition</a></li></ul>
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