ISO/IEC INTERNATIONAL STANDARD 10021-10 Second edition 1999-12-15 Information technology Message Handling Systems (MHS): MHS routing Technologies de l'information-Systemesdemessagerie (MHS):Routage MHS Reference number ISO/IEC10021-10:1999(E) IEC [so @ISO/IEC1999 ISO/IEC10021-10:1999(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 responsibility 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 ?ISO/IEC1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Casepostale56.CH-1211Geneva20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.ch Published by ISO in 2000 Printed in Switzerland ISO/IEC10021-10:1999(E) CONTENTS Page 1 Scope 1 2 2.1 Presentation references...... 2.2 Directory references... 2.3 Message Handling references.. N 2.4 Country Code references N 2.5 Additional references.. 2 3 Definitions ... 2 3.1 MHS-routing definitions 2 3.2 MHS definitions .. 3 3.3 Directory definitions.. 3 4 Abbreviations. 3 5 Conventions.... 3 5.1 Conventions for routing model specification 3 5.2 Generalfontconventions 4 5.3 Font conventions for ASN.1 definitions 5.4 Rules for ASN.1 definitions 6 MHS-routing Overview.. 4 6.1 Operational characteristics 4 6.2 Components of the model. 5 6.2.1 Routing-collective . 6 6.2.2 Routing-MTA. 6 6.2.3 Connection-group... 7 6.2.4 OR-address-subtree 8 6.2.5 Routing-advice . 9 6.2.6 Local use tables .. 10 6.3 Routing decision overview... 10 6.4 Directory organization... 11 6.5 Authentication principles.... 11 Routing.-collective-subtre.... 7 12 7.1 12 7.1.1 Routing Collective object class ... 12 7.1.2 Routing MTA object class.... 12 7.1.3 Connection Group object class.... 12 7.1.4 MTA Information object class... 12 7.2 Attribute types ... 13 7.2.1 Routing Collective attribute types. 13 7.2.2 Routing MTA attribute types... 13 7.2.3 Connection Group attribute types... 14 7.2.4 MTA Information attribute types ......... 16 7.3 17 8 17 8.1 OR-address Element object class 17 8.2 17 8.2.1 Routing Advice.. 17 8.2.2 Expression Matches.. 19 8.2.3 Next Level Complete. 20 8.2.4 20 Recipient MD Assigned Alternate Recipient .... ts reserved ISO/IEC10021-10:1999(E) Page 8.3 OR-address Element subclasses . 20 8.3.1 OR-address Subtree Base object class.. 20 8.3.2 Common OR.-adress object classes..... 20 8.3.3 Mnemonic OR-address object classes... 21 8.3.4 Terminal OR..adress object classes...... 21 Numeric OR-address object classes.... 22 8.3.5 8.3.6 Postal OR.adress object classes........ 8.4 OR-address Element Names.. 22 8.4.1 22 CommonOR-addressElementNames. 8.4.2 Mnemonic OR-address Element Names... 22 8.4.3 Terminal OR-address Element Names .. 23 8.4.4 Numeric OR-address Element Names . 23 8.4.5 Postal OR-address Element Names... 23 8.5 Generation of OR.addresselement attributes .... 24 8.6 OR-address-subtree name forms.... 24 25 9 Procedures .. 9.1 Routing-MTA procedures .. 25 9.1.1 Amendment to the Frontend procedure.. 26 9.1.2 Routing-decision procedure... 26 9.1.3 ORaddresssubtree-read procedure..... 29 9.1.4 Local-delivery-eva