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-
- OSI-X400ops Working Group E. Stefferud
- INTERNET DRAFT: A=IMX Network Management Associates, Inc.
- draft-ietf-x400ops-admd-03.txt October 1993
-
- C=US; A=IMX
- (Expires: January 26 1993)
-
- Status Of this Memo
-
- This document provides information for the Internet community.
- It does not specify an Internet standard. Distribution of this
- memo is unlimited.
-
- Abstract
-
- This document establishes an Internet Based X.400 Administrative
- Management Domain (ADMD) with the name "A=IMX", for use in the
- United States of America (C=US), according to the applicable rules
- of CCITT Recommendations and ISO Standards, and in keeping with
- existing regulatory practices in the United States of America. It
- also establishes a naming authority under the Internet Assigned
- Numbers Authority (IANA) to register and openly publish Private
- Management Domain (PRMD) names subordinate to A=IMX under C=US.
-
- The name "IMX is registered with the American National Standards
- Institute (ANSI) MHS Management Domain (MHSMD) register as is
- appropriate for names that are to be used as ADMD names in the
- United States of America (c=US).
-
- Any chosen C=US ADMD name is a matter of arbitrary choice as long as
- it does not conflict with any other choice of ADMD name by any other
- ADMD Service Provider operating in association with C=US.
- Registration of IMX as the ADMD name for the Internet in C=US will
- serve to avoid any possible name collision, and will enable Internet
- PRMD operators to obtain and register PRMD names for use with X.400.
-
- NOTE: Other countries may or may not take similar actions, at their
- sovereign discretion. How C=US and other Internet based ADMD
- operations in other countries should or should not be
- coordinated is not addressed in this document.
-
- 1. Introduction
-
- X.400 is the International Telegraph and Telephone Consultative
- Committee (CCITT) identifier for Message Handling System (MHS)
- Recommendations [X.400]. The ISO/IEC identifier for the matching
- ISO/IEC Standard is IS-10021 [10021]. CCITT was recently renamed to
- be the International Telecommunications Union - Telecommunication
- (ITU-T).
-
- Many organizations in the Internet community wish to deploy X.400
- for the purpose of exchanging Electronic Mail messages. Working
- within X.400 specifications, this document establishes and names the
- required C=US Internet ADMD to meet X.400 infrastructure needs.
-
-
- Stefferud draft-ietf-x400ops-admd-03.txt [Page 1]
-
- INTERNET DRAFT: A=IMX draft-ietf-x400ops-admd-03.txt October 1993
-
- The X.400 Recommendations call for a specific naming and addressing
- infrastructure consisting of Administrative Management Domain (ADMD)
- entities within each sovereign Country (C), where each ADMD must
- have an unambiguous name within its given country and where each
- ADMD then becomes a naming authority for the registration of
- unambiguous names of subordinate Private Management Domain (PRMD)
- entities.
-
- In combination, the set of domain attributes, with their associated
- name values, constitute tagged attribute=value pairs which can be
- used to form ORAddresses (e.g., C=US; A=IMX; P=SOME-NAME; O=COMPANY;
- OU=Sales) [X.411, Figure 2, Part 30 of 41].
-
- This document, is only concerned with ADMD and PRMD levels. All
- levels below PRMD are a local matter within each PRMD.
-
- 2. X.400 Requirements on ADMD and PRMD Names
-
- ADMD and PRMD Name values are limited by the X.400 Recommendations
- to a maximum length of 16 PrintableString characters [X.411, Figure
- B-1 (Part 2 of 3)]. Case, multiple white space characters, and
- leading or trailing white spaces are all non-distinguishing for
- purposes of matching [F.401, Section 5.3].
-
- The PrintableString character set is essentially US-ASCII without:
-
- @ atsign
- ! exclamation point (bang)
- % percent sign
- _ underscore
- " double quote
-
- Specifically, PrintableString is a subset of International Alphabet
- Number 5 (IA5), shown in this table copied from [X.208, Table 5].
- ______________________________
- Name Graphic
- ______________________________
- Capital letters A,B,...Z
- Small letters a,b,...z
- Digits 0,1,...9
- Space (space)
- Apostrophe '
- Left parentheses (
- Right parentheses )
- Plus sign +
- Comma ,
- Hyphen -
- Full stop .
- Solidus /
- Colon :
- Equal sign =
- Question mark ?
- ______________________________
- Source: CCITT X.208, Table 5
-
- Stefferud draft-ietf-x400ops-admd-03.txt [Page 2]
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- INTERNET DRAFT: A=IMX draft-ietf-x400ops-admd-03.txt October 1993
-
-
- 3. Relationship to Domain Name System (DNS)
-
- The X.400 naming scheme has certain similarities to the Internet
- Domain Naming System (DNS) [DNS], which is also global and
- hierarchical with distribution of naming authority to entities at
- each subordinate level in the naming tree. Many thousands of names
- have already been registered in the DNS. The DNS coincidentally
- uses the same international register of country codes (ISO 3166
- two-character codes) for its top level names (e.g,. US and GB),
- except that the DNS also includes UK for interesting historical
- reasons, and includes some three character top level domain names.
- Currently, these are COM, EDU, GOV, INT, MIL, NET, and ORG.
-
- It is known that additional two character country codes will be
- added to ISO 3166 and to the DNS.
-
- It is not known whether or not additional three character top level
- names will be added to the DNS. It is not known whether new top
- level names of greater than 3 characters may be added to the DNS.
-
- DNS names are limited to 64 characters of US-ASCII letters (A-Z),
- digits (0-9), hyphen (-) and dot (.), with dot restricted to use as
- a constructive delimiter between concatenated names from ascending
- DNS levels. Case is non-distinguishing for purposes of matching.
- Embedded white space is not allowed. Leading and trailing white
- space is ignored for purposes of matching.
-
- 4. Name of the C=US Internet ADMD
-
- The name of the C=US Internet ADMD is "IMX".
-
- 5. PRMD Names in C=US; A=IMX
-
- PRMD Name Registration is accomplished by overt application to the
- IANA registration agent by the registrant. A registration form will
- be supplied by the IANA registration agent. All IANA registered
- PRMD names will be openly published by the IANA for public access.
-
- To align with CCITT X.402 and ISO/IEC 10021-2, the IANA registrar
- shall not register the name values of "single-space" [X.402, Section
- 18.3.1] or a single zero (0). [CCITT-MHS, Section 3.2.3]
- These special names are reserved in X.400 for special purposes.
-
- All IANA registered PRMD names are assumed to be the rightful
- intellectual property of the registration applicant, but may be
- subject to legal challenge of the applicant's right to use the name
- at any time. The IANA takes no position with regard to the legal
- "right to use" of any registered name, and leaves resolution of any
- challenge to the challenge parties, which may or may not involve
- litigation. In the event of challenge to any registered PRMD name,
- the IANA only records in its register the result of whatever
- resolution may occur, upon notification of the resolution by the
- registrant or by some other authority with proper jurisdiction.
-
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- Stefferud draft-ietf-x400ops-admd-03.txt [Page 3]
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- INTERNET DRAFT: A=IMX draft-ietf-x400ops-admd-03.txt October 1993
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-
- 6. Sources of PRMD Registered Names
-
- PRMD names registered by the IANA under A=IMX are drawn from:
-
- (1) DNS names already registered in the DNS naming tree, which
- do not exceed the X.400 limit of 16 characters, or
-
- (2) any other name that is guaranteed not to conflict with
- any other IANA registered PRMD name under C=US; A=IMX,
- or any current or possible future DNS name.
-
- Examples of (1) are:
-
- P=nma.com; P=uci.edu; P=nic.ddn.mil; P=nsf.gov; P=sintef.no
-
- NOTE: P=cnri.reston.va.us contains 17 characters and thus is not
- permitted by X.400 to be used as a PRMD name. This may be
- unfortunate for CNRI, but the cause of the problem is in the
- X.400 limit of 16 PrintableString Characters, not the DNS.
-
- NOTE: There is no reason to disallow C=US; A=IMX; P=sintef.no if
- sintef.no wishes to so register. Thus it is not proscribed.
-
- The key requirement is that a PRMD name must be an unambiguous
- string of permitted characters uniquely registered to a single owner
- under the registering ADMD, so any existing DNS name with 16 or
- fewer characters under any DNS top level domain may be used as a
- PRMD name in C=US; A=IMX because all such DNS names are already
- unambiguous and uniquely assigned to registrants by the IANA in the
- Internet DNS, and they only contain allowed characters.
-
- This is a secondary use of a DNS name. If a name is ever removed
- from the DNS for any reason, then it must also be removed from the
- IANA PRMD name register, if it is so registered. DNS names are not
- automatically registered as PRMD names.
-
- Examples of (2) are:
-
- P=ESnet; P=NASA; P=Boeing Seattle; P=XYZZY; P=CALTRANS
-
- All such names must not conflict with any possible current or future
- DNS name that may or may not ever be registered.
-
- 7. Proscribed PRMD Names
-
- The following PRMD Names are proscribed, in accordance with the
- rules given in Section 6 above:
-
- (1) Any PRMD name that is also registered in the DNS, unless it is
- registered in the DNS by the same registration applicant.
-
-
-
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- Stefferud draft-ietf-x400ops-admd-03.txt [Page 4]
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- Internet Draft: A=IMX draft-ietf-x400ops-admd-03.txt October 1993
-
-
- (2) Any PRMD name that ends in a dot (.) followed by any number of
- characters of the kind allowed in DNS top-level domain names,
- unless also registered in the DNS by the same registration
- applicant.
-
- 8. Operation Of C=US; A=IMX
-
- Operating rules for elements of the X.400 Mail Transfer System
- (MTS) in the Internet are not addressed in this document.
-
- The rules for interconnection of A=IMX PRMDS with other ADMDS are
- not addressed in this document.
-
- 9. Security Considerations
-
- This document does not address any aspect of security. It neither
- exacerbates nor reduces any security problems or risks that are
- already inherent in X.400 technologies or deployed systems.
-
- 10. References
-
-
- [X.208] CCITT Recommendation X.208, 1988,
- Specification of Abstract Syntax Notation - One (ASN.1)
-
-
- [X.400] CCITT Recommendation X.400, 1988,
- Message Handling System and Service Overview.
-
-
- [10021] ISO/IEC 10021-1, 1988, Information Processing Systems --
- Text Communication -- MOTIS -- System and Service
- Overview.
-
-
- [F.401] CCITT Recommendation F.400, 1988,
- Naming and Addressing for Public Message Handling Services.
-
-
- [X.402] CCITT Recommendation X.402, 1988,
- Message Handling Systems: Overall Architecture.
-
- ISO/IEC 10021-2, 1988, Information Processing Systems --
- Text Communication -- MOTIS -- Overall Architecture.
-
- [X.411] CCITT Recommendation X.411, 1988,
- Message Handling Systems: Message Transfer System:
- Abstract Service Definition and Procedures.
-
- ISO/IEC 10021-4, 1988, Information Processing Systems --
- Text Communication -- MOTIS -- Message Transfer System:
- Abstract Service Definition and Procedures.
-
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- Stefferud draft-ietf-x400ops-admd-03.txt [Page 5]
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- INTERNET DRAFT: A=IMX draft-ietf-x400ops-admd-03.txt October 1993
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-
- [MHS] CCITT MHS, March 1992, Implementors' Guide, Version 8 [1988]
-
-
- [ASCII] Coded Character Set--7-Bit American Standard Code
- for Information Interchange, ANSI X3.4-1986.
-
-
- [DNS] Paul V. Mockapetris. Domain Names -- Concepts and
- Facilities. Request for Comments 1034, DDN Network
- Information Center, SRI International, November 1987.
-
-
-
- 11. Author's Address
-
- Einar A. Stefferud Telephone: +1 714 842 3711
- Network Management Associates, Inc. Facsimile: +1 714 848 2091
- 10301 Drey Lane Internet: Stef@nma.com
- Huntington Beach, CA 92647-5615, USA
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- Stefferud draft-ietf-x400ops-admd-03.txt [Page 6]
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- INTERNET DRAFT: A=IMX draft-ietf-x400ops-admd-03.txt October 1993
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- Appendix: Discussion of ADMD name value chosen for C=US portion of the
- global Internet
-
- NOTE: If and when this RFC is published as an Informational or
- Experimental RFC, this Appendix may be removed
-
- The name value of "A=IMX" has been arbitrarily chosen because it is
- short and suggests the idea of mail exchange, but it is not an
- acronym for any specific set of words. It is just an easily
- remembered, easily typed set of characters without any assigned
- meaning.
-
- It is required to obtain consensus for this choice of name from the
- IETF, the IAB, and the Internet Society and then the right to legal
- use of the name must be established in the United States of America.
-
- Choosing a name for something like an ADMD is a political issue, and
- requires consideration of the rights of others to use the chosen
- name. In the Internet, it is not yet clear who should act to secure
- legal rights to the use of a selected name.
-
- This document has been developed to lay the technical groundwork
- without getting caught up on the political/legal/administrative
- issues of name establishment.
-
- With adoption of this document as the working basis for C=US ADMD
- and PRMD name registration, we should next be able to progress on to
- legal action to secure the right to use the chosen name.
-
- In order to progress with this work, the University of Wisconsin,
- supported with NSF Grant Funds, has taken the action to register
- A=IMX in the ANSI MHSMD register as appropriate for any C=US entity
- wishing to establish an operational ADMD which can then register
- subordinate PRMD names. The University of Wisconsin will hold
- the registration for the benefit of the C=US Internet Community,
- with the understanding that the registration will be transferred to
- another appropriate holder if and when one arises.
-
- <Single-Space> is not available for Internet ADMD Name use in C=US,
- in that it is reserved by the [CCITT X.400 | ISO MOTIS]
- [Recommendations | Standards] for the name of a virtual ADMD that is
- to be approved by some National Body in C=US. This issue is of no
- concern to the IETF, IAB, or ISOC as long as we do not attempt to
- use the proscribed name.
-
- We should not seek approval of any C=US National Body in the
- establishment of an Internet ADMD in C=US. No other C=US ADMD has
- sought nor obtained any such approval, and thus the precedent has
- been set for the C=US Internet community to self assert ADMD status.
-
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- Stefferud draft-ietf-x400ops-admd-03.txt [Page 7]
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