ISO/IEC NTERNATIONAL STANDARD 10021-1 Second edition 2003-11-15 Information technology Message Handling Systems (MHs) Part 1: System and service overview Technologies de l'information - Systemes de messagerie (MHs) Partie 1: Présentation générale du systeme et des services Reference number ISO/IEC 10021-1:2003(E) IEC Tso ISO/IEC2003 SO/EC10021-1:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the respons bility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, ISO's member body in the country of the requester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ISO/IEC2003—Allrightsreserved ISO/IEC 10021-1:2003(E) Contents Page 1 Scope. 2 Normative references.... 3 Terms and definitions.. 3.1 Open Systems Interconnection .... 3.2 Directory SystemsS..................................... 4 Abbreviations..... 5 Conventions 6 7 Functional Model of MHS. 7.1 Description of the MHS Model..... 7.2 Structure of Messages... 7.3 Application of the MHS model.. 7.3.1 Physical Mapping....... 7.3.2 Organizational Mapping .. 7.3.3 Administration Management Domain . 7.3.4 Private Management Domain .. 7.4 The Message Store........... 7.4.1 Physical Configurations ... 12 7.4.2 Organizational Configurations................. 12 8 The Message Transfer Service.. 12 8.1 Submission and Delivery ... 12 8.2 Transfer... 12 8.3 Notifications. 12 8.4 User Agent..... 13 8.5 Message Store.. 8.6 Access Unit ... 13 8.7 Use of the MTS in the Provision of Various Services ...... 13 9 The IPM Service ... 13 9.1 IPM Service Functional Model... 13 9.2 Structure of IP-messages.... 9.3 IP-notifications... 10 Intercommunication with Physical Delivery Services 15 10.1 Introduction ... 15 10.2 Organizational Configurations ... 16 11 Specialized Access. 16 11.1 Introduction.. 16 11.2 Telex Access... 17 11.2.1 17 11.2.2 11.3 Facsimile Acces... 17 11.3.1 Non-registered (Public) Access from the IPM Service .... 17 12 Naming and Addressing.. 17 12.1 Introduction. 17 12.2 Directory Names . 17 12.3 OR-Names. 12.4 OR-Addresses 18 @ ISO/IEC 2003 — All rights reserved ii IS0/IEC 10021-1:2003(E) 13 MHS Use of Directory. 13.1 Introduction ... ..18 13.2 Functional Model. 13.3 14 Distribution Lists in MHS 14.1 Introduction.. .20 14.2 Properties of a DL .20 14.3 .21 14.4 14.5 DL Expansion ... .21 14.6 Nesting.... 21 14.7 Recursion Control ..21 14.8 Delivery ..... 21 14.9 Routing Loop Control... ..21 14.10 Notifications......... 14.11 DL Handling Policy.... 15 15.1 Introduction.. 22 15.2 MHS Security Threats .. 15.2.1 Access Threats..... 15.2.2 15.2.3 Intra-Message Threats.... 15.2.4 Data Store Threats.. 23 15.3 Security Model.......... 15.3.1 Secure Access Management and Administration .... 15.3.2 Secure Messaging ... 15.4 MHS Security Capabilities ... 15.5 15.6 MHS Security Dependencies .. ..26 15.7 IPM Security.... 16 Conversion in MHS... 17 Clause 17 of the corresponding ITU-T Recommendation is not part of this International Standard.....8 18 Ele