Internet Message Protocol
RFC 753

Document Type RFC - Unknown (March 1979; No errata)
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March 1979

IEN: 85
RFC: 753
                                    
                                    
                                    
                                    
                                    
                                    
                       INTERNET MESSAGE PROTOCOL
                                    
                                    
                                    
                           Jonathan B. Postel

                               March 1979
                                    
                                    
                                    
                                    
                     Information Sciences Institute
                   University of Southern California
                           4676 Admiralty Way
                   Marina del Rey, California  90291
                                    
                             (213) 822-1511



< INC-PROJECT, MAIL-MAR-79.NLS.38, >, 31-Mar-79 19:50 JBP ;;;;

[Page 0]                                                          Postel



March 1979                                                              
                                               Internet Message Protocol

                           TABLE OF CONTENTS

    PREFACE ........................................................ iii

1.  INTRODUCTION ..................................................... 1

  1.1.  Motivation ................................................... 1
  1.2.  Scope ........................................................ 1
  1.3.  The Internetwork Environment ................................. 2
  1.4.  Operation .................................................... 2
  1.5.  Interfaces ................................................... 3

2.  FUNCTIONAL DESCRIPTION ........................................... 5

  2.1.  Relation to Other Protocols .................................. 5
  2.2.  Terminology  ................................................. 5
  2.3.  Assumptions .................................................. 6
  2.4.  General Specification ........................................ 7
  2.5.  Mechanisms .................................................. 11

3.  DETAILED SPECIFICATION .......................................... 13

  3.1.  Overview of Message Structure ............................... 13
  3.2.  Data Elements ............................................... 13
  3.3.  Message Objects ............................................. 16
  3.4.  Command ..................................................... 23
  3.5.  Document .................................................... 31
  3.6.  Message Structure ........................................... 33
  3.7.  MPM Organization ............................................ 36
  3.8.  Interfaces .................................................. 39

4.  EXAMPLES & SCENARIOS ............................................ 41

  Example 1:  Message Format ........................................ 41
  Example 2:  Delivery and Acknowledgment ........................... 43

GLOSSARY ............................................................ 49

REFERENCES .......................................................... 51

APPENDICES .......................................................... 53

  

Postel                                                          [Page i]



                                                              March 1979
Internet Message Protocol

[Page ii]                                                         Postel



March 1979                                                              
                                               Internet Message Protocol

                                PREFACE

This is the first edition of this specification and should be treated as
a request for comments, advice, and suggestions.  A great deal of prior
work has been done on computer aided message systems and some of this is
listed in the reference section.  This specification was shaped by many
discusions with members of the ARPA research community, and others
interested in the development of computer aided message systems.  This
document was prepared as part of the ARPA sponsored Internetwork
Concepts Research Project at ISI, with the assistance of Greg Finn, Alan
Katz, Paul Mockapetris, and Mamie Chew.

                                                              Jon Postel

Postel                                                        [Page iii]



                                                              March 1979
Internet Message Protocol

[Page iv]                                                         Postel



March 1979                                                              
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