[1] [CITE@en[RFC 987 - Mapping between X.400 and RFC 822]], [TIME[2021-02-21T21:33:06.000Z]], [TIME[2021-03-13T07:25:03.680Z]] <https://tools.ietf.org/html/rfc987>

[2] [CITE@en[RFC 1026 - Addendum to RFC 987: (Mapping between X.400 and RFC-822)]], [TIME[2021-01-31T23:42:54.000Z]], [TIME[2021-03-13T07:26:38.737Z]] <https://tools.ietf.org/html/rfc1026>

[3] [CITE@en[RFC 1138 - Mapping between X.400(1988) / ISO 10021 and RFC 822]], [TIME[2021-01-31T11:41:52.000Z]], [TIME[2021-03-13T07:27:10.256Z]] <https://tools.ietf.org/html/rfc1138>

[5] [CITE@en[RFC 1148 - Mapping between X.400(1988) / ISO 10021 and RFC 822]], [TIME[2021-02-21T20:28:49.000Z]], [TIME[2021-03-13T07:34:48.145Z]] <https://tools.ietf.org/html/rfc1148>

[4] [[UTCTime]], [[PrintableString]]

[6] [[RFC 1154]]

[7] [CITE@en[RFC 1327 - Mapping between X.400(1988) / ISO 10021 and RFC 822]], [TIME[2021-02-21T20:58:05.000Z]], [TIME[2021-03-13T09:41:47.330Z]] <https://tools.ietf.org/html/rfc1327>

[8] [CITE@en[RFC 1328 - X.400 1988 to 1984 downgrading]], [TIME[2021-01-24T23:35:38.000Z]], [TIME[2021-03-13T09:44:02.021Z]] <https://tools.ietf.org/html/rfc1328>


[9] [CITE@en[RFC 1330 - Recommendations for the Phase I Deployment of OSI Directory Services (X.500) and OSI Message Handling Services (X.400) within the ESNET Community]], [TIME[2021-01-24T08:47:31.000Z]], [TIME[2021-03-13T09:45:04.678Z]] <https://tools.ietf.org/html/rfc1330>

[10] [CITE@en[RFC 1405 - Mapping between X.400(1984/1988) and Mail-11 (DECnet mail)]], [TIME[2021-01-31T15:11:54.000Z]], [TIME[2021-03-13T11:29:42.215Z]] <https://tools.ietf.org/html/rfc1405>

[11] [CITE@en[RFC 1465 - Routing Coordination for X.400 MHS Services Within a Multi Protocol / Multi Network Environment Table Format V3 for Static Routing]], [TIME[2021-01-24T23:39:01.000Z]], [TIME[2021-03-13T11:43:35.714Z]] <https://tools.ietf.org/html/rfc1465>

- [CODE[<Operation>]]

[12] [CITE@en[RFC 1494 - Equivalences between 1988 X.400 and RFC-822 Message Bodies]], [TIME[2021-02-15T08:06:13.000Z]], [TIME[2021-03-13T11:52:34.624Z]] <https://tools.ietf.org/html/rfc1494>

[13] [CITE@en[RFC 1495 - Mapping between X.400 and RFC-822 Message Bodies]], [TIME[2021-01-31T10:20:48.000Z]], [TIME[2021-03-13T11:54:56.549Z]] <https://tools.ietf.org/html/rfc1495>

[14] [CITE@en[RFC 1496 - Rules for downgrading messages from X.400/88 to X.400/84 when MIME content-types are present in the messages]], [TIME[2021-02-01T01:05:54.000Z]], [TIME[2021-03-13T11:55:50.986Z]] <https://tools.ietf.org/html/rfc1496>

[24] [CITE@en[RFC 1502 - X.400 Use of Extended Character Sets]], [TIME[2021-01-24T15:50:13.000Z]], [TIME[2021-03-22T09:26:32.904Z]] <https://tools.ietf.org/html/rfc1502>

[15] [CITE@en[RFC 1506 - A Tutorial on Gatewaying between X.400 and Internet Mail]], [TIME[2021-02-01T01:05:56.000Z]], [TIME[2021-03-14T03:13:33.923Z]] <https://tools.ietf.org/html/rfc1506>

[16] [CITE@en[RFC 1615 - Migrating from X.400(84) to X.400(88)]], [TIME[2021-01-24T09:50:50.000Z]], [TIME[2021-03-16T05:10:17.645Z]] <https://tools.ietf.org/html/rfc1615>

[17] [CITE@en[RFC 1616 - X.400(1988) for the Academic and Research Community in Europe]], [TIME[2021-01-24T09:55:23.000Z]], [TIME[2021-03-16T05:12:31.472Z]] <https://tools.ietf.org/html/rfc1616>

[18] [CITE@en[RFC 1648 - Postmaster Convention for X.400 Operations]], [TIME[2021-01-24T10:25:31.000Z]], [TIME[2021-03-16T05:15:42.761Z]] <https://tools.ietf.org/html/rfc1648>

[19] [CITE@en[RFC 1664 - Using the Internet DNS to Distribute RFC1327 Mail Address Mapping Tables]], [TIME[2021-01-24T16:20:47.000Z]], [TIME[2021-03-16T05:17:29.012Z]] <https://tools.ietf.org/html/rfc1664>

[20] [CITE@en[RFC 1685 - Writing X.400 O/R Names]], [TIME[2021-02-01T01:57:58.000Z]], [TIME[2021-03-16T05:19:06.515Z]] <https://tools.ietf.org/html/rfc1685>

[21] [CITE[RFC Errata Report » RFC Editor]], [TIME[2021-03-16T05:19:23.000Z]] <https://www.rfc-editor.org/errata_search.php?rfc=1685>

[22] [CITE@en[RFC 1838 - Use of the X.500 Directory to support mapping between X.400 and RFC 822 Addresses]], [TIME[2021-01-24T23:42:55.000Z]], [TIME[2021-03-20T09:57:38.030Z]] <https://tools.ietf.org/html/rfc1838>

[23] [CITE@en[RFC 1922 - Chinese Character Encoding for Internet Messages]], [TIME[2021-01-31T09:04:27.000Z]], [TIME[2021-03-22T09:21:05.549Z]] <https://tools.ietf.org/html/rfc1922#section-6>

[27] [CITE@en[RFC 2156 - MIXER (Mime Internet X.400 Enhanced Relay): Mapping between X.400 and RFC 822/MIME]], [TIME[2021-03-14T09:07:09.000Z]], [TIME[2021-03-23T12:24:42.049Z]] <https://tools.ietf.org/html/rfc2156>

[28] [CITE@en[RFC 2157 - Mapping between X.400 and RFC-822/MIME Message Bodies]], [TIME[2021-03-28T10:53:20.000Z]], [TIME[2021-04-06T08:36:29.026Z]] <https://tools.ietf.org/html/rfc2157>

[29] [CITE[RFC Errata Report » RFC Editor]], [TIME[2021-04-06T08:37:17.000Z]] <https://www.rfc-editor.org/errata_search.php?rfc=2157>

[30] [CITE@en[RFC 2158 - X.400 Image Body Parts]], [TIME[2021-04-04T21:28:36.000Z]], [TIME[2021-04-06T08:38:11.289Z]] <https://tools.ietf.org/html/rfc2158>

[31] [CITE@en[RFC 2159 - A MIME Body Part for FAX]], [TIME[2021-04-04T21:28:36.000Z]], [TIME[2021-04-06T08:39:14.273Z]] <https://tools.ietf.org/html/rfc2159>

[25] [[RFC 2160]]

[26] [[RFC 2161]]

[32] [CITE@en[RFC 2162 - MaXIM-11 - Mapping between X.400 / Internet mail and Mail-11 mail]], [TIME[2021-04-04T21:24:52.000Z]], [TIME[2021-04-06T08:39:49.384Z]] <https://tools.ietf.org/html/rfc2162>

[33] [CITE@en[RFC 2163 - Using the Internet DNS to Distribute MIXER Conformant Global Address Mapping (MCGAM)]], [TIME[2021-03-28T11:36:25.000Z]], [TIME[2021-04-06T08:41:10.320Z]] <https://tools.ietf.org/html/rfc2163>

[34] [CITE@en[RFC 2164 - Use of an X.500/LDAP directory to support MIXER address mapping]], [TIME[2021-04-04T07:52:11.000Z]], [TIME[2021-04-06T08:42:28.552Z]] <https://tools.ietf.org/html/rfc2164>

[35] [CITE@en[RFC 4249: Implementer-Friendly Specification of Message and MIME-Part Header Fields and Field Components]], [TIME[2021-08-17T12:04:04.000Z]] <https://www.rfc-editor.org/rfc/rfc4249.html#section-3.1.2.2.7>

[36] [CITE@en[RFC 4450: Getting Rid of the Cruft: Report from an Experiment in Identifying and Reclassifying Obsolete Standards Documents]], [TIME[2023-12-02T08:22:42.000Z]], [TIME[2023-12-02T08:27:49.682Z]] <https://www.rfc-editor.org/rfc/rfc4450.html>