RFC 2156 (rfc2156) - Page 1 of 144

MIXER (Mime Internet X

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Network Working Group                                         S. Kille
Request for Comments: 2156                                  Isode Ltd.
Obsoletes: 987, 1026, 1138, 1148, 1327, 1495              January 1998
Updates: 822
Category: Standards Track


              MIXER (Mime Internet X.400 Enhanced Relay):
                 Mapping between X.400 and RFC 822/MIME

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1998).  All Rights Reserved.

Table of Contents

   1          - Overview ......................................    3
   1.1        - X.400 .........................................    3
   1.2        - RFC 822 and MIME ..............................    3
   1.3        - The need for conversion .......................    4
   1.4        - General approach ..............................    4
   1.5        - Gatewaying Model ..............................    5
   1.6        - Support of X.400 (1984) .......................    8
   1.7        - X.400 (1992) ..................................    8
   1.8        - MIME ..........................................    8
   1.9        - Body Parts ....................................    8
   1.10       - Local and Global Scenarios ....................    9
   1.11       - Compatibility with previous versions ..........   10
   1.12       - Aspects not covered ...........................   10
   1.13       - Subsetting ....................................   11
   1.14       - Specification Language ........................   11
   1.15       - Related Specifications ........................   11
   1.16       - Document Structure ............................   12
   1.17       - Acknowledgements ..............................   12
   2          - Service Elements ..............................   13
   2.1        - The Notion of Service Across a Gateway ........   13
   2.2        - RFC 822 .......................................   15
   2.3        - X.400 .........................................   18
   3          - Basic Mappings ................................   27
   3.1        - Notation ......................................   27



Kille                       Standards Track
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