DMS was intended to replace the AUTODIN network, and is based on implementations of the OSIX.400 mail, X.500 directory and X.509 public key certificates, with several extensions to meet the specific needs of military messaging. DMS has been coordinated by the Defense Information Systems Agency (DISA), and testing began in 1995.
Amongst other vendors, Microsoft and IBM sell versions of their electronic mail software (Outlook/Exchange and Notes) that have been tested for compliance with DMS requirements.
The DefenseMessageSystem or DefenseMessagingSystem (DMS) is a deployment of secure electronic mail and directory services in the United States Department of Defense.
DMS is usually operated in conjunction with DMDS a profiling system that takes a message and forwards it, based on message critera, to parties that are required to take action on a message.
A malicious DMS user could create a message that exploits such a bug in order to install a key logger on the target computer(s).