MIXER (Mime Internet X.400 Enhanced Relay): Mapping between X.400 and RFC 822/MIME
This specification has been revised 6 times since RFC 987 (1986). Each document below formally obsoleted the one before it; the versions still in force are listed first.
Revision timeline
Current version — implement against this
Superseded versions — historical reference only
- RFC 987Mapping between X.400 and RFC 822ObsoletedJune 1986replaced by RFC1327, RFC2156
- RFC 1026Addendum to RFC 987: (Mapping between X.400 and RFC-822)ObsoletedSeptember 1987replaced by RFC1327, RFC2156
- RFC 1138Mapping between X.400(1988) / ISO 10021 and RFC 822ObsoletedDecember 1989experimentalreplaced by RFC1327, RFC2156
- RFC 1148Mapping between X.400(1988) / ISO 10021 and RFC 822ObsoletedMarch 1990experimentalreplaced by RFC1327, RFC2156
- RFC 1327Mapping between X.400(1988) / ISO 10021 and RFC 822ObsoletedMay 1992proposed standardreplaced by RFC2156
- RFC 1495Mapping between X.400 and RFC-822 Message BodiesObsoletedAugust 1993proposed standardreplaced by RFC2156
This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 2156 (January 1998).