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Mapping between X.400(1988) / ISO 10021 and RFC 822 (RFC1138)

IP.com Disclosure Number: IPCOM000001949D
Original Publication Date: 1989-Dec-01
Included in the Prior Art Database: 2019-Feb-11

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S.E. Kille: AUTHOR

Related Documents

10.17487/RFC1138: DOI

Abstract

Ths RFC suggests an electronic mail protocol mapping for the Internet community and UK Academic Community, and requests discussion and suggestions for improvements. This memo does not specify an Internet standard. This memo updates RFCs 822, 987, and 1026.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 2% of the total text.

Network Working Group S. Kille Request for Comments 1138 University College London Updates: RFCs 822, 987, 1026 December 1989

Mapping between X.400(1988) / ISO 10021 and RFC 822

Status of this Memo

This RFC suggests an electronic mail protocol mapping for the Internet community and UK Academic Community, and requests discussion and suggestions for improvements. This memo does not specify an Internet standard. Distribution of this memo is unlimited.

This document describes a set of mappings which will enable interworking between systems operating the CCITT X.400 (1988) Recommendations on Message Handling Systems / ISO IEC 10021 Message Oriented Text Interchange Systems (MOTIS) [CCITT/ISO88a], and systems using the RFC 822 mail protocol [Crocker82a] or protocols derived from RFC 822. The approach aims to maximise the services offered across the boundary, whilst not requiring unduly complex mappings. The mappings should not require any changes to end systems.

This document is based on RFC 987 and RFC 1026 [Kille86a, Kille87a], which define a similar mapping for X.400 (1984). This document does not obsolete the earlier ones, as its domain of application is different.

Specification

This document specifies a mapping between two protocols. This specification should be used when this mapping is performed on the Internet or in the UK Academic Community. This specification may be modified in the light of implementation experience, but no substantial changes are expected.

Table of Contents

1. Overview ............................................... 2 1.1 X.400 ................................................. 2 1.2 RFC 822 ............................................... 3 1.3 The need for conversion ............................... 4 1.4 General approach ...................................... 4 1.5 Gatewaying Model ...................................... 5 1.6 RFC 987 ............................................... 7 1.7 Aspects not covered ................................... 8 1.8 Subsetting ............................................ 9 1.9 Document Structure .................................... 9

Kille [Page 1]

RFC 1138 Mapping X.400(88) and 822 December 1989

1.10 Acknowledgements ..................................... 10 2. Service Elements ....................................... 10 2.1 The Notion of Service Across a Gateway ................ 10 2.2 RFC 822 ............................................... 11 2.3 X.400 ................................................. 15 3. Basic Mappings ........................................ 24 3.1 Notation .............................................. 24 3.2 ASCII and IA5 ......................................... 25 3.3 Standard Types ........................................ 25 3.4 Encoding ASCII in Printable String .................... 28 4. Addressing ............................................. 29 4.1 A textual representation of MTS.ORAddress ............. 30 4.2 Basic Representation ...............................

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