1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T X.411TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (06/1999) SERIES X: DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS Message Handling Systems Information technology Message Handling Systems (MHS) Message Transfer System: Abstract Service Definition and P
2、rocedures ITU-T Recommendation X.411 ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS PUBLIC DATA NETWORKS Services and facilities X.1X.19 Interfaces X.20X.49 Transmission, signalling and switching X.50X.89 Network aspects X.90X.149 Maintenance X.150X.179 Administrative ar
3、rangements X.180X.199 OPEN SYSTEMS INTERCONNECTION Model and notation X.200X.209 Service definitions X.210X.219 Connection-mode protocol specifications X.220X.229 Connectionless-mode protocol specifications X.230X.239 PICS proformas X.240X.259 Protocol Identification X.260X.269 Security Protocols X.
4、270X.279 Layer Managed Objects X.280X.289 Conformance testing X.290X.299 INTERWORKING BETWEEN NETWORKS General X.300X.349 Satellite data transmission systems X.350X.369 IP-based networks X.370X.399 MESSAGE HANDLING SYSTEMS X.400X.499 DIRECTORY X.500X.599 OSI NETWORKING AND SYSTEM ASPECTS Networking
5、X.600X.629 Efficiency X.630X.639 Quality of service X.640X.649 Naming, Addressing and Registration X.650X.679 Abstract Syntax Notation One (ASN.1) X.680X.699 OSI MANAGEMENT Systems Management framework and architecture X.700X.709 Management Communication Service and Protocol X.710X.719 Structure of
6、Management Information X.720X.729 Management functions and ODMA functions X.730X.799 SECURITY X.800X.849 OSI APPLICATIONS Commitment, Concurrency and Recovery X.850X.859 Transaction processing X.860X.879 Remote operations X.880X.899 OPEN DISTRIBUTED PROCESSING X.900X.999 For further details, please
7、refer to the list of ITU-T Recommendations. ITU-T Rec. X.411 (06/1999) i INTERNATIONAL STANDARD ISO/IEC 10021-4 ITU-T RECOMMENDATION X.411 Information technology Message Handling Systems (MHS) Message Transfer System: Abstract Service Definition and Procedures Summary This Recommendation | Internati
8、onal Standard contains an improved version of the P3 Register operation which introduces support for the Restricted Delivery element of service and adds general extensibility to the Register operation. The ASN.1 has been fully revised to use the new Recommendations X.680 and X.880, while retaining c
9、omplete compatibility with the 1988 and 1992 P1 and P3 protocols. This Recommendation | International Standard incorporates enhancements on use of ISO/IEC 10646 characters in OR-addresses, new values of error codes for security and security defect resolution, using Version 3 certificates, business c
10、lass messaging extensions, fax cover page, and use of 1997 Directory. Source The ITU-T Recommendation X.411 was approved on the 18 June 1999. The identical text is also published as ISO/IEC International Standard 10021-4. Following ITU-T decision to publish new editions of the set of Message Handlin
11、g Recommendations, this edition of ITU-T Rec. X.411 consolidates X.411 (11/1995), X.411 Technical Corrigendum 1 (08/1997), X.411 Amendment 1 (12/1997), X.411 Technical Corrigendum 2 (12/1997) and X.411 Technical Corrigendum 3 (09/1998). ii ITU-T Rec. X.411 (06/1999) FOREWORD The International Teleco
12、mmunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them w
13、ith a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T
14、Recommendations is covered by the procedure laid down in WTSC Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used f
15、or conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes
16、 no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had/had not received notice of intellectual pro
17、perty, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2003 All rights reserved. No part of this publication m
18、ay be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. X.411 (06/1999) iii CONTENTS Page SECTION ONE INTRODUCTION 1 1 Scope 1 2 Normative references . 1 2.1 Open Systems Interconnection 2 2.2 Message Handling Systems. 2 2.3 Directory Systems . 2 2.4 Countr
19、y Codes. 3 2.5 Telematic Services 3 3 Definitions 3 4 Abbreviations . 3 5 Conventions 3 5.1 Terms 3 5.2 Presence of Parameters . 3 5.3 Abstract Syntax Definitions 3 5.4 Interpretation of UTC Time values . 4 SECTION TWO MESSAGE TRANSFER SYSTEM ABSTRACT SERVICE 4 6 Message Transfer System Model . 4 7
20、Message Transfer System Abstract Service Overview. 5 MTS Bind and Unbind 5 Submission Port Abstract Operations 5 Delivery Port Abstract Operations 5 Administration Port Abstract Operations 6 7.1 MTS Bind and Unbind 6 7.2 Submission Port 6 7.3 Delivery Port. 6 7.4 Administration Port. 6 8 Message Tra
21、nsfer System Abstract Service Definition 6 8.1 MTS-bind and MTS-unbind 6 8.1.1 Abstract-bind and Abstract-unbind . 7 8.1.2 Bind-errors 10 8.2 Submission Port 10 8.2.1 Abstract-operations . 10 8.2.2 Abstract-errors 31 8.3 Delivery Port. 33 8.3.1 Abstract-operations . 33 8.3.2 Abstract-errors 48 8.4 A
22、dministration Port. 50 8.4.1 Abstract-operations . 50 8.4.2 Abstract-errors 55 8.5 Common Parameter Types 56 8.5.1 MTS-identifier 56 8.5.2 Global-domain-identifier. 57 8.5.3 MTA-name 57 8.5.4 Time 57 8.5.5 OR-name . 57 8.5.6 Encoded-information-types. 57 8.5.7 Certificate 58 8.5.8 Token 60 8.5.9 Sec
23、urity-label 60 8.5.10 Algorithm-identifier 61 8.5.11 Password 61 9 Message Transfer System Abstract Syntax Definition. 61 9.1 Extension Mechanism . 62 9.2 Criticality Mechanism. 62 iv ITU-T Rec. X.411 (06/1999) Page SECTION THREE MESSAGE TRANSFER AGENT ABSTRACT SERVICE 102 10 Refined Message Transfe
24、r System Model 102 11 Message Transfer Agent Abstract Service Overview. 103 MTA-bind and MTA-unbind 103 Transfer Port Abstract-operations . 103 11.1 MTA-bind and MTA-unbind 103 11.2 Transfer Port Abstract-operations . 103 12 Message Transfer Agent Abstract Service Definition 103 12.1 MTA-bind and MT
25、A-unbind 103 12.1.1 Abstract-bind and Abstract-unbind . 104 12.1.2 Bind-errors 106 12.2 Transfer Port . 107 12.2.1 Abstract-operations . 107 12.2.2 Abstract-errors 113 12.3 Common Parameter Types 113 12.3.1 Trace-information and internal-trace-information 113 13 Message Transfer Agent Abstract Synta
26、x Definition. 115 SECTION FOUR PROCEDURES FOR DISTRIBUTED OPERATION OF THE MTS. 123 14 Procedures for Distributed Operation of the MTS 123 14.1 Overview of the MTA Model 123 14.1.1 Organization and Modelling Technique 123 14.2 Deferred Delivery Module 125 14.2.1 Deferred Delivery Procedure 125 14.3
27、Main Module. 126 14.3.1 Control Procedure . 128 14.3.2 Front-end Procedure 130 14.3.3 Routing-and-conversion-decision Procedure 131 14.3.4 Routing-decision Procedure 132 14.3.5 Conversion-decision Procedure. 134 14.3.6 Error-processing Procedure. 135 14.3.7 Redirection Procedure. 136 14.3.8 Splitter
28、 Procedure 137 14.3.9 Conversion-procedure. 138 14.3.10 Distribution-list-expansion Procedure. 138 14.3.11 Loop Detection and Routing Algorithm 140 14.3.12 Directory Name Resolution Procedure 140 14.3.13 Double-enveloper Procedure. 141 14.3.14 Double-envelope-extractor Procedure. 142 14.4 Report Mod
29、ule 143 14.4.1 Control Procedure . 143 14.4.2 Report-front-end Procedure 144 14.4.3 Report-generation Procedure. 144 14.4.4 Report-routing Procedure 145 14.4.5 Double-enveloper Procedure. 147 14.5 MTS-bind and MTS-unbind 147 14.5.1 MTS-user initiated MTS-bind Procedure 147 14.5.2 MTS-user initiated
30、MTS-unbind Procedure 148 14.5.3 MTA initiated MTS-bind Procedure. 148 14.5.4 MTA initiated MTS-unbind Procedure . 149 14.6 Submission Port 149 14.6.1 Message-submission Procedure 149 14.6.2 Probe-submission Procedure. 150 14.6.3 Cancel-deferred-delivery Procedure . 151 14.6.4 Submission-control Proc
31、edure 152 14.7 Delivery Port. 152 14.7.1 Message-delivery Procedure . 152 14.7.2 Probe-delivery-test Procedure. 154 ITU-T Rec. X.411 (06/1999) v Page 14.7.3 Report-delivery Procedure 155 14.7.4 Delivery-control Procedure. 155 14.8 Administration Port. 156 14.8.1 Register Procedure 156 14.8.2 MTS-use
32、r initiated Change-credentials Procedure 157 14.8.3 MTA initiated Change-credentials Procedure. 157 14.9 MTA-bind and MTA-unbind 158 14.9.1 MTA-bind-in Procedure 158 14.9.2 MTA-unbind-in Procedure 158 14.9.3 MTA-bind-out Procedure 159 14.9.4 MTA-unbind-out Procedure 159 14.10 Transfer Port . 160 14.
33、10.1 Message-in Procedure . 160 14.10.2 Probe-in Procedure 160 14.10.3 Report-in Procedure 161 14.10.4 Message-out Procedure . 161 14.10.5 Probe-out Procedure 162 14.10.6 Report-out Procedure 162 Annex A Reference Definition of MTS Object Identifiers 164 Annex B Reference Definition of MTS Parameter
34、 Upper Bounds 166 Annex C Definition of 1988 Message Transfer System Abstract Service. 169 C.1 Register-88 169 C.1.1 Arguments. 169 C.1.2 Results. 170 C.1.3 Abstract-errors 170 C.2 Delivery-control-88. 171 C.2.1 Arguments. 171 C.2.2 Results. 171 C.2.3 Abstract-errors 171 Annex D Differences between
35、ISO/IEC 10021-4 and ITU-T Recommendation X.411 175 Annex E Index . 176 vi ITU-T Rec. X.411 (06/1999) Introduction This Service Definition is one of a set of Recommendations | International Standards defining Message Handling in a distributed open systems environment. Message Handling provides for th
36、e exchange of messages between users on a store-and-forward basis. A message submitted by one user (the originator) is transferred through the Message Transfer System (MTS) and delivered to one or more other users (the recipients). The MTS comprises a number of message-transfer-agents (MTAs), which
37、transfer messages and deliver them to their intended recipients. This Service Definition was developed jointly by ITU-T and ISO/IEC. It is published as common text as ITU-T Rec. X.411 | ISO/IEC 10021-4. ISO/IEC 10021-4:1999 (E) ITU-T Rec. X.411 (06/1999) 1 INTERNATIONAL STANDARD ISO/IEC 10021-4 ITU-
38、T RECOMMENDATION X.411 Information Technology Message Handling Systems (Mhs) Message Transfer System: Abstract Service Definition And Procedures SECTION ONE INTRODUCTION 1 Scope This Recommendation | International Standard defines the abstract-service provided by the MTS (the MTS Abstract Service),
39、and specifies the procedures to be performed by MTAs to ensure the correct distributed operation of the MTS. ITU-T Rec. X.402 | ISO/IEC 10021-2 identifies the other Recommendations | International Standards which define other aspects of Message Handling Systems. Access to the MTS Abstract Service de
40、fined in this Recommendation | International Standard may be provided by the MTS Access Protocol (P3) defined in ITU-T Rec. X.419 | ISO/IEC 10021-6. The distributed operation of the MTS defined in this Recommendation | International Standard may be provided by the use of the MTS Transfer Protocol (P
41、1) also defined in ITU-T Rec. X.419 | ISO/IEC 10021-6. The means by which messages may be routed through the MTS is specified in ISO/IEC 10021-10. Section two of this Recommendation | International Standard defines the MTS Abstract Service. Clause 6 describes the Message Transfer System Model. Claus
42、e 7 provides an overview of the MTS Abstract Service. Clause 8 defines the semantics of the parameters of the MTS Abstract Service. Clause 9 defines the abstract-syntax of the MTS Abstract Service. Section three of this Recommendation | International Standard defines the MTA Abstract Service. Clause
43、 10 refines the model of the MTS, first presented in clause 6, to show that the MTS comprises a number of MTAs that interwork with one another to provide the MTS Abstract Service. Clause 11 provides an overview of the MTA Abstract Service. Clause 12 defines the semantics of the parameters of the MTA
44、 Abstract Service. Clause 13 defines the abstract-syntax of the MTA Abstract Service. Section four of this Recommendation | International Standard specifies the procedures performed by MTAs to ensure the correct distributed operation of the MTS. Annex A provides a reference definition of the MTS obj
45、ect identifiers cited in the ASN.1 modules in the body of this Recommendation | International Standard. Annex B provides a reference definition of the upper bounds of the size constraints imposed upon variable length data types defined in ASN.1 modules in ITU-T Rec. X.411. Annex C identifies the tec
46、hnical differences between the ISO/IEC and ITU-T versions of ITU-T Rec. X.411 and ISO/IEC 10021-4. Annex D provides an index to this Recommendation | International Standard, categorised into: definitions of the MTS parameters; Abbreviations; Terms; ASN.1 modules; ASN.1 information object classes; AS
47、N.1 types; and ASN.1 values. 2 Normative references The following Recommendations and International Standards contain provisions which, through reference in this text, constitute provisions of this Recommendation | International Standard. At the time of publication, the editions indicated were valid
48、. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recommendation | International Standard are encouraged to investigate the possibility of applying the most recent editions of the Recommendations and Standards listed below. Members of ISO and IEC ma
49、intain registers of currently valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently valid ITU-T Recommendations. ISO/IEC 10021-4:1999 (E) 2 ITU-T Rec. X.411 (06/1999) 2.1 Open Systems Interconnection This Service Definition cites the following OSI specifications: ITU-T Recommendation X.680 (1997) | ISO/IEC 8824-1:1998, Information technology Abstract Syntax Notation One (ASN.1) Specification of Basic Notation. IT
