draft-ietf-eai-rfc5336bis-06.txt   draft-ietf-eai-rfc5336bis-07.txt 
Network Working Group J. Yao Network Working Group J. Yao
Internet-Draft W. Mao Internet-Draft W. Mao
Obsoletes: RFC5336 CNNIC Obsoletes: RFC5336 CNNIC
(if approved) December 3, 2010 (if approved) December 4, 2010
Updates: RFC5321 and 5322 Updates: RFC5321 and 5322
(if approved) (if approved)
Intended status: Standards Track Intended status: Standards Track
Expires: June 6, 2011 Expires: June 7, 2011
SMTP Extension for Internationalized Email Address SMTP Extension for Internationalized Email Address
draft-ietf-eai-rfc5336bis-06.txt draft-ietf-eai-rfc5336bis-07.txt
Abstract Abstract
This document specifies an SMTP extension for transport and delivery This document specifies an SMTP extension for transport and delivery
of email messages with internationalized email addresses or header of email messages with internationalized email addresses or header
information. This document updates some syntax rules defined in RFC information. This document updates some syntax rules defined in RFC
5321 and RFC 5322. 5321 and RFC 5322.
Status of this Memo Status of this Memo
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on June 6, 2011. This Internet-Draft will expire on June 7, 2011.
Copyright Notice Copyright Notice
Copyright (c) 2010 IETF Trust and the persons identified as the Copyright (c) 2010 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of (http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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5. Security Considerations . . . . . . . . . . . . . . . . . . . 15 5. Security Considerations . . . . . . . . . . . . . . . . . . . 15
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15 6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15
7. Change History . . . . . . . . . . . . . . . . . . . . . . . . 16 7. Change History . . . . . . . . . . . . . . . . . . . . . . . . 16
7.1. draft-yao-eai-rfc5336bis: Version 00 . . . . . . . . . . . 16 7.1. draft-yao-eai-rfc5336bis: Version 00 . . . . . . . . . . . 16
7.2. draft-ietf-eai-rfc5336bis: Version 00 . . . . . . . . . . 16 7.2. draft-ietf-eai-rfc5336bis: Version 00 . . . . . . . . . . 16
7.3. draft-ietf-eai-rfc5336bis: Version 01 . . . . . . . . . . 16 7.3. draft-ietf-eai-rfc5336bis: Version 01 . . . . . . . . . . 16
7.4. draft-ietf-eai-rfc5336bis: Version 02 . . . . . . . . . . 16 7.4. draft-ietf-eai-rfc5336bis: Version 02 . . . . . . . . . . 16
7.5. draft-ietf-eai-rfc5336bis: Version 03 . . . . . . . . . . 16 7.5. draft-ietf-eai-rfc5336bis: Version 03 . . . . . . . . . . 16
7.6. draft-ietf-eai-rfc5336bis: Version 04 . . . . . . . . . . 16 7.6. draft-ietf-eai-rfc5336bis: Version 04 . . . . . . . . . . 16
7.7. draft-ietf-eai-rfc5336bis: Version 05 . . . . . . . . . . 16 7.7. draft-ietf-eai-rfc5336bis: Version 05 . . . . . . . . . . 16
7.8. draft-ietf-eai-rfc5336bis: Version 06 . . . . . . . . . . 16 7.8. draft-ietf-eai-rfc5336bis: Version 06 . . . . . . . . . . 17
7.9. draft-ietf-eai-rfc5336bis: Version 07 . . . . . . . . . . 17
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.1. Normative References . . . . . . . . . . . . . . . . . . . 17 8.1. Normative References . . . . . . . . . . . . . . . . . . . 17
8.2. Informative References . . . . . . . . . . . . . . . . . . 18 8.2. Informative References . . . . . . . . . . . . . . . . . . 18
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 18 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 19
1. Introduction 1. Introduction
The Simple Mail Transfer Protocol [RFC5321] provides a negotiation The Simple Mail Transfer Protocol [RFC5321] provides a negotiation
mechanism about service extension with which clients can discover mechanism about service extension with which clients can discover
server capabilities and make decisions for further processing. This server capabilities and make decisions for further processing. This
document use this mechanism to support an internationalized email document use this mechanism to support an internationalized email
address. An extended overview of the extension model for address. An extended overview of the extension model for
internationalized addresses and headers appears in [RFC4952bis], internationalized addresses and headers appears in [RFC4952bis],
referred to as "the framework document" or just as "framework" referred to as "the framework document" or just as "framework"
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of ASCII@A-label [RFC5890] if the email address is in the format of of ASCII@A-label [RFC5890] if the email address is in the format of
ASCII@non-ASCII. ASCII@non-ASCII.
3.3. Extended Mailbox Address Syntax 3.3. Extended Mailbox Address Syntax
RFC 5321, Section 4.1.2, defines the syntax of a mailbox entirely in RFC 5321, Section 4.1.2, defines the syntax of a mailbox entirely in
terms of ASCII characters, using the production for a mailbox and terms of ASCII characters, using the production for a mailbox and
those productions on which it depends. those productions on which it depends.
The key changes made by this specification are, informally, to The key changes made by this specification are, informally, to
o Change the definition of "Domain" to permit either the definition o Change the definition of "Domain" to permit either the RFC 5321
above or a UTF-8 string representing a DNS label that is definition above or a UTF-8 string representing a DNS label that
conformant with IDNA definitions [RFC5890]. is conformant with IDNA definitions [RFC5890].
o Change the definition of "Local-part" to permit either the o Change the definition of "Local-part" to permit either the
definition above or a UTF-8 string. That string MUST NOT contain definition above or a UTF-8 string. That string MUST NOT contain
any of the ASCII characters (either graphics or controls) that are any of the ASCII characters (either graphics or controls) that are
not permitted in "atext"; it is otherwise unrestricted. not permitted in "atext"; it is otherwise unrestricted.
According to the description above, the syntax of an According to the description above, the syntax of an
internationalized email mailbox name (address) is defined in ABNF internationalized email mailbox name (address) is defined in ABNF
[RFC5234] as follows. [RFC5234] as follows.
uMailbox = uLocal-part "@" ( uDomain / address-literal ) uMailbox = uLocal-part "@" ( uDomain / address-literal )
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+-------------+---------------------------------+-----------+ +-------------+---------------------------------+-----------+
This document updates the values to the SMTP Enhanced Status Code This document updates the values to the SMTP Enhanced Status Code
subregistry of the Mail Parameters registry, following the guidance subregistry of the Mail Parameters registry, following the guidance
in Sections 3.4 and 3.6.4.2 of this document, and being based on in Sections 3.4 and 3.6.4.2 of this document, and being based on
[RFC5248]. The registration data is as follows: [RFC5248]. The registration data is as follows:
Code: X.6.7 Code: X.6.7
Sample Text: UTF-8 addresses not permitted Sample Text: UTF-8 addresses not permitted
for that sender/recipient for that sender/recipient
Associated basic status code: 553, 550 Associated basic status code: 550, 553
Description: This indicates the reception of a MAIL or RCPT Description: This indicates the reception of a MAIL or RCPT
command that rUTF-8 addresses are not permitted command that rUTF-8 addresses are not permitted
Defined: RFC XXXX (Standard track) Defined: RFC XXXX (Standard track)
Submitter: Jiankang YAO Submitter: Jiankang YAO
Change controller: ima@ietf.org Change controller: ima@ietf.org
Code: X.6.8 Code: X.6.8
Sample Text: UTF-8 string reply is required, Sample Text: UTF-8 string reply is required,
but not permitted by the client but not permitted by the client
Associated basic status code: 553, 550, 252 Associated basic status code: 252, 550, 553
Description: This indicates that a reply containing a UTF-8 Description: This indicates that a reply containing a UTF-8
string is required to show the mailbox name, string is required to show the mailbox name,
but that form of response is not but that form of response is not
permitted by the client. permitted by the client.
Defined: RFC XXXX (Standard track) Defined: RFC XXXX (Standard track)
Submitter: Jiankang YAO Submitter: Jiankang YAO
Change controller: ima@ietf.org Change controller: ima@ietf.org
Code: X.6.9 Code: X.6.9
Sample Text: UTF-8 header message can not be transferred Sample Text: UTF-8 header message can not be transferred
to one or more recipient so the message to one or more recipient so the message
must be rejected must be rejected
Associated basic status code: 550 Associated basic status code: 550
Description: This indicates that transaction failed Description: This indicates that transaction failed
after the final "." of the DATA command. after the final "." of the DATA command.
Defined: RFC XXXX (Standard track) Defined: RFC XXXX (Standard track)
Submitter: Jiankang YAO Submitter: Jiankang YAO
Change controller: ima@ietf.org Change controller: ima@ietf.org
Code: X.6.10
[[anchor9: RFC editor: pls remove the following text: Note: X.6.10 Description: This is a duplicate of X.6.8 and
has been suggested in RFC5336. if EAI WG decides to delete X.6.10 in SHOULD be deprecated for further use.
this document, IANA SHOULD deprecate X.6.10 in the registry too. We
may updae this text in the next version.]]
The following entries SHOULD be updated or added in the "Mail The following entries SHOULD be updated or added in the "Mail
Transmission Types" registry under the Mail Parameters registry. Transmission Types" registry under the Mail Parameters registry.
+---------------+----------------------------+----------------------+ +--------------+-------------------------------+--------------------+
| WITH protocol | Description | Reference | | WITH | Description | Reference |
| types | | | | protocol | | |
+---------------+----------------------------+----------------------+ | types | | |
| UTF8SMTP | UTF8SMTP with Service | [RFCXXXX] | +--------------+-------------------------------+--------------------+
| | Extensions | | | UTF8SMTP | ESMTP with UTF8SMTP | [RFCXXXX] |
| UTF8SMTPA | UTF8SMTP with SMTP AUTH | [RFC4954] [RFCXXXX] | | UTF8SMTPA | ESMTP with UTF8SMTP and SMTP | [RFC4954] |
| UTF8SMTPS | UTF8SMTP with STARTTLS | [RFC3207] [RFCXXXX] | | | AUTH | [RFCXXXX] |
| UTF8SMTPSA | UTF8SMTP with both | [RFC3207] [RFC4954] | | UTF8SMTPS | ESMTP with UTF8SMTP and | [RFC3207] |
| | STARTTLS and SMTP AUTH | [RFCXXXX] | | | STARTTLS | [RFCXXXX] |
| UTF8LMTP | UTF8LMTP with Service | [RFCXXXX] | | UTF8SMTPSA | ESMTP with UTF8SMTP and both | [RFC3207] |
| | Extensions | | | | STARTTLS and SMTP AUTH | [RFC4954] |
| UTF8LMTPA | UTF8LMTP with LMTP AUTH | [RFC4954] [RFCXXXX] | | | | [RFCXXXX] |
| UTF8LMTPS | UTF8LMTP with STARTTLS | [RFC3207] [RFCXXXX] | | UTF8LMTP | LMTP with UTF8SMTP | [RFCXXXX] |
| UTF8LMTPSA | UTF8LMTP with both | [RFC3207] [RFC4954] | | UTF8LMTPA | LMTP with UTF8SMTP and SMTP | [RFC4954] |
| | STARTTLS and LMTP AUTH | [RFCXXXX] | | | AUTH | [RFCXXXX] |
+---------------+----------------------------+----------------------+ | UTF8LMTPS | LMTP with UTF8SMTP and | [RFC3207] |
| | STARTTLS | [RFCXXXX] |
| UTF8LMTPSA | LMTP with UTF8SMTP and both | [RFC3207] |
| | STARTTLS and LMTP AUTH | [RFC4954] |
| | | [RFCXXXX] |
+--------------+-------------------------------+--------------------+
5. Security Considerations 5. Security Considerations
See the extended security considerations discussion in the framework See the extended security considerations discussion in the framework
document [RFC4952bis]. document [RFC4952bis].
6. Acknowledgements 6. Acknowledgements
This document revised the [RFC5336]document based on the EAI WG's This document revised the [RFC5336]document based on the EAI WG's
discussion result. Many EAI WG members did some tests and discussion result. Many EAI WG members did some tests and
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contributions include material from John C Klensin, Charles Lindsey, contributions include material from John C Klensin, Charles Lindsey,
Dave Crocker, Harald Tveit Alvestrand, Marcos Sanz, Chris Newman, Dave Crocker, Harald Tveit Alvestrand, Marcos Sanz, Chris Newman,
Martin Duerst, Edmon Chung, Tony Finch, Kari Hurtta, Randall Gellens, Martin Duerst, Edmon Chung, Tony Finch, Kari Hurtta, Randall Gellens,
Frank Ellermann, Alexey Melnikov, Pete Resnick, S. Moonesamy, Soobok Frank Ellermann, Alexey Melnikov, Pete Resnick, S. Moonesamy, Soobok
Lee, Shawn Steele, Alfred Hoenes, Miguel Garcia, Magnus Westerlund, Lee, Shawn Steele, Alfred Hoenes, Miguel Garcia, Magnus Westerlund,
and Lars Eggert. Of course, none of the individuals are necessarily and Lars Eggert. Of course, none of the individuals are necessarily
responsible for the combination of ideas represented here. responsible for the combination of ideas represented here.
7. Change History 7. Change History
[[anchor12: RFC Editor: Please remove this section.]] [[anchor11: RFC Editor: Please remove this section.]]
7.1. draft-yao-eai-rfc5336bis: Version 00 7.1. draft-yao-eai-rfc5336bis: Version 00
Applied errata suggested by Alfred Hoenes. Applied errata suggested by Alfred Hoenes.
7.2. draft-ietf-eai-rfc5336bis: Version 00 7.2. draft-ietf-eai-rfc5336bis: Version 00
Applied the changes suggested by the EAI new charter. Applied the changes suggested by the EAI new charter.
7.3. draft-ietf-eai-rfc5336bis: Version 01 7.3. draft-ietf-eai-rfc5336bis: Version 01
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improve the text improve the text
7.7. draft-ietf-eai-rfc5336bis: Version 05 7.7. draft-ietf-eai-rfc5336bis: Version 05
improve the text based on AD and Co-chairs improve the text based on AD and Co-chairs
7.8. draft-ietf-eai-rfc5336bis: Version 06 7.8. draft-ietf-eai-rfc5336bis: Version 06
update the iana consideration update the iana consideration
7.9. draft-ietf-eai-rfc5336bis: Version 07
improve the iana consideration
8. References 8. References
8.1. Normative References 8.1. Normative References
[ASCII] American National Standards Institute (formerly United [ASCII] American National Standards Institute (formerly United
States of America Standards Institute), "USA Code for States of America Standards Institute), "USA Code for
Information Interchange", ANSI X3.4-1968, 1968. Information Interchange", ANSI X3.4-1968, 1968.
[RFC1652] Klensin, J., Freed, N., Rose, M., Stefferud, E., and D. [RFC1652] Klensin, J., Freed, N., Rose, M., Stefferud, E., and D.
Crocker, "SMTP Service Extension for 8bit-MIMEtransport", Crocker, "SMTP Service Extension for 8bit-MIMEtransport",
RFC 1652, July 1994. RFC 1652, July 1994.
 End of changes. 14 change blocks. 
34 lines changed or deleted 43 lines changed or added

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