draft-ietf-eai-rfc5336bis-13.txt   draft-ietf-eai-rfc5336bis-14.txt 
Network Working Group J. Yao Network Working Group J. Yao
Internet-Draft W. Mao Internet-Draft W. Mao
Obsoletes: 5336 (if approved) CNNIC Obsoletes: 5336 (if approved) CNNIC
Intended status: Standards Track September 16, 2011 Intended status: Standards Track October 6, 2011
Expires: March 19, 2012 Expires: April 8, 2012
SMTP Extension for Internationalized Email SMTP Extension for Internationalized Email
draft-ietf-eai-rfc5336bis-13.txt draft-ietf-eai-rfc5336bis-14.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. information.
Status of this Memo Status of this Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
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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 March 19, 2012. This Internet-Draft will expire on April 8, 2012.
Copyright Notice Copyright Notice
Copyright (c) 2011 IETF Trust and the persons identified as the Copyright (c) 2011 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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7.6. draft-ietf-eai-rfc5336bis: Version 04 . . . . . . . . . . 17 7.6. draft-ietf-eai-rfc5336bis: Version 04 . . . . . . . . . . 17
7.7. draft-ietf-eai-rfc5336bis: Version 05 . . . . . . . . . . 17 7.7. draft-ietf-eai-rfc5336bis: Version 05 . . . . . . . . . . 17
7.8. draft-ietf-eai-rfc5336bis: Version 06 . . . . . . . . . . 17 7.8. draft-ietf-eai-rfc5336bis: Version 06 . . . . . . . . . . 17
7.9. draft-ietf-eai-rfc5336bis: Version 07 . . . . . . . . . . 17 7.9. draft-ietf-eai-rfc5336bis: Version 07 . . . . . . . . . . 17
7.10. draft-ietf-eai-rfc5336bis: Version 08 . . . . . . . . . . 17 7.10. draft-ietf-eai-rfc5336bis: Version 08 . . . . . . . . . . 17
7.11. draft-ietf-eai-rfc5336bis: Version 09 . . . . . . . . . . 18 7.11. draft-ietf-eai-rfc5336bis: Version 09 . . . . . . . . . . 18
7.12. draft-ietf-eai-rfc5336bis: Version 10 . . . . . . . . . . 18 7.12. draft-ietf-eai-rfc5336bis: Version 10 . . . . . . . . . . 18
7.13. draft-ietf-eai-rfc5336bis: Version 11 . . . . . . . . . . 18 7.13. draft-ietf-eai-rfc5336bis: Version 11 . . . . . . . . . . 18
7.14. draft-ietf-eai-rfc5336bis: Version 12 . . . . . . . . . . 18 7.14. draft-ietf-eai-rfc5336bis: Version 12 . . . . . . . . . . 18
7.15. draft-ietf-eai-rfc5336bis: Version 13 . . . . . . . . . . 18 7.15. draft-ietf-eai-rfc5336bis: Version 13 . . . . . . . . . . 18
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.16. draft-ietf-eai-rfc5336bis: Version 14 . . . . . . . . . . 18
8.1. Normative References . . . . . . . . . . . . . . . . . . . 18 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.1. Normative References . . . . . . . . . . . . . . . . . . . 19
8.2. Informative References . . . . . . . . . . . . . . . . . . 20 8.2. Informative References . . . . . . . . . . . . . . . . . . 20
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 20 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 20
1. Introduction 1. Introduction
The document defines a Simple Mail Transfer Protocol [RFC5321] The document defines a Simple Mail Transfer Protocol [RFC5321]
extension so servers can advertise the ability to accept and process extension so servers can advertise the ability to accept and process
internationalized email addresses (see section 1.1), and internationalized email addresses (see section 1.1), and
internationalized email headers [RFC5335bis]. internationalized email headers [RFC5335bis].
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This specification extends some syntax rules defined in RFC 5321 and This specification extends some syntax rules defined in RFC 5321 and
permits internationalized email addresses in the envelope, but it permits internationalized email addresses in the envelope, but it
does not modify RFC 5321. It permits data formats defined in does not modify RFC 5321. It permits data formats defined in
[RFC5335bis], but it does not modify RFC 5322. It does require that [RFC5335bis], but it does not modify RFC 5322. It does require that
the 8BITMIME extension [RFC6152] be announced by the UTF8SMTPbis- the 8BITMIME extension [RFC6152] be announced by the UTF8SMTPbis-
aware SMTP server and used with "BODY=8BMITMIME" by the UTF8SMTPbis- aware SMTP server and used with "BODY=8BMITMIME" by the UTF8SMTPbis-
aware SMTP client, but it does not modify the 8BITMIME specification aware SMTP client, but it does not modify the 8BITMIME specification
in any way. in any way.
This specification replaces an earlier, experimental, approach to the
same problem [RFC5336].
2. Overview of Operation 2. Overview of Operation
This document specifies an element of the email internationalization This document specifies an element of the email internationalization
work, specifically the definition of an SMTP extension for work, specifically the definition of an SMTP extension for
internationalized email. The extension is identified with the token internationalized email. The extension is identified with the token
"UTF8SMTPbis". "UTF8SMTPbis".
The internationalized email headers specification [RFC5335bis] The internationalized email headers specification [RFC5335bis]
provides the details of email header features enabled by this provides the details of email header features enabled by this
extension extension
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The following ABNF rule will be imported from RFC 5890, section The following ABNF rule will be imported from RFC 5890, section
2.3.2.1 directly: 2.3.2.1 directly:
o <U-label> o <U-label>
The following rules are extended in ABNF [RFC5234] as follows. The following rules are extended in ABNF [RFC5234] as follows.
sub-domain =/ U-label sub-domain =/ U-label
; extend the definition of sub-domain in RFC5321, section 4.1.2 ; extend the definition of sub-domain in RFC5321, section 4.1.2
atext =/ UTF8-non-ascii atext =/ UTF8-non-ascii
; extend the definition of atext in RFC5321, section 4.1.2 ; extend the implicit definition of atext in
; RFC5321, Section 4.1.2, which ultimately points to
; the actual definition in RFC5322, Section 3.2.3
qtextSMTP =/ UTF8-non-ascii qtextSMTP =/ UTF8-non-ascii
; extend the definition of qtextSMTP in RFC5321, section 4.1.2 ; extend the definition of qtextSMTP in RFC5321, section 4.1.2
esmtp-value =/ UTF8-non-ascii esmtp-value =/ UTF8-non-ascii
; extend the definition of esmtp-value in RFC5321, section 4.1.2 ; extend the definition of esmtp-value in RFC5321, section 4.1.2
3.4. MAIL Command Parameter Usage 3.4. MAIL Command Parameter Usage
If the envelope or message being sent requires the capabilities of If the envelope or message being sent requires the capabilities of
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Update according to Chris Newman's comments Update according to Chris Newman's comments
improve the texts improve the texts
7.15. draft-ietf-eai-rfc5336bis: Version 13 7.15. draft-ietf-eai-rfc5336bis: Version 13
Update the esmpt-value syntax according to Chris Newman's comments Update the esmpt-value syntax according to Chris Newman's comments
improve the texts improve the texts
8. References 7.16. draft-ietf-eai-rfc5336bis: Version 14
improve the texts
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.
[RFC2033] Myers, J., "Local Mail Transfer Protocol", RFC 2033, [RFC2033] Myers, J., "Local Mail Transfer Protocol", RFC 2033,
October 1996. October 1996.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
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