private management domain (MHS) (PRMD)
The Private Management Domain (PRDMD) is an instance in MHS systems according to X.400. It is the coverage area of a company or organization.
The PRMD is connected to the Administrative Management Domain( ADMD) and provides the MHS services. The User Agents( UA) and Remote User Agents (RUA) are connected to the ADMD or the PRMD. The PRMD provides a mailbox to each connected User Agent. Communication between the ADMD and the PRMD is done using P protocols.