The term "Automated Message Handling System" or "AMHS" has not been trademarked by a vendor, but is instead a product category that includes several systems and products created by government agencies, integrators and software companies.
In addition to the DoD organizations, other federal agencies (including the DEA and FAA) also use the AMHS.
The benefits of using AMHS over older versions of DMS is that it consolidates and reduces the number of Fortezza cards that contain X.509 certificates for each recipient.
AMHS can also use the Virtual Fortezza Cards, or VFC's, stored on a Type 2 Cryptographic Support Server board, or T2CSS.
The T2CSS is located within the actual AMHS server, reducing the inconvenience placed upon the user to keep track of a Fortezza card.