An RFC from the IETF, RFC 1495 Mapping between X.400 and RFC-822 Message Bodies. Harald Tveit Alvestrand, Steve Kille, R. Miles, Marshall T. Rose[?], S. Thompson. August 1993. (Format: TXT=20071 bytes) (Obsoleted by RFC 2156) (Updates RFC 1327[?]) (Status: PROPOSED STANDARD)