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Defense Message System (DMS)

Definition - What does Defense Message System (DMS) mean?

Defense Message System (DMS) is a secure email system designed by the U.S. Department of Defense to transmit military messages. DMS uses the Open Systems Interconnection (OSI) model standards such as X.500 directory, X.509 public key and X.400 mail.

DMS is similar to traditional email clients. It is flexible, user-friendly and may be used with third-party messaging systems.

Techopedia explains Defense Message System (DMS)

DMS was developed to provide a secure and integrated email system for the Department of Defense. It included advanced technology for future challenges.

DMS is made up of the following basic components:

  • Management Workstation (MWS): This component is responsible for total DMS control and security and handles configuration, faults, accounting and other monitoring issues. MWS uses a management workstation system that provides reliable third-party protocols for DMS.
  • Directory Services: These provide content management system services, which hierarchically store official directory contacts and incoming message data along with entries that explain user groups and basic information.
  • Message Handling System (MHS): This system allows users to create, edit, send and receive messages.
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