messaging system
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... CCITT Recommendations will be explicit. X.400 defines an
Interpersonal Messaging System (IPMS), making use of a store and
forward Message Transfer System. This document relates to the IPMS ...
... ISO, "CCITT Recommendations X.420/ ISO IS 10021-7", Message Handling Systems: Interpersonal Messaging System, CCITT/ISO, December 1988. ...
