1984/1988 X.400 recommendations — user requirements

Abstract

An evaluation of the 1984 and 1988 CCITT X.400 series of recommendations is given with particular reference to the use of a Message Handling System (MHS) for interpersonal communication. The human user's needs in electronic communication are studied. Based on these findings, the technical quality of the services provided are evaluated, as is the support of the human factors in communication. MHS is evaluated in terms of its suitability for the individual user and the applicability for communication in groups. Message handling services are presented and compared with user requirements. In particular, the new services of the X.400 recommendations of 1988 concerning interworking with Directory Services (DS), the security model, message store and distribution lists are examined to determine how they meet the needs of the human user, and how they could be used or extended to improve communication in groups.