Post Office Protocol Version 3 (POP3) Support for UTF-8
RFC 6856
| Document | Type |
RFC - Proposed Standard
(March 2013; No errata)
Obsoletes RFC 5721
|
|
|---|---|---|---|
| Authors | Randall Gellens , Chris Newman , Jiankang Yao , Kazunori Fujiwara | ||
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | WG Document | |
| Document shepherd | John Klensin | ||
| Shepherd write-up | Show (last changed 2012-08-24) | ||
| IESG | IESG state | RFC 6856 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Pete Resnick | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) R. Gellens
Request for Comments: 6856 QUALCOMM Incorporated
Obsoletes: 5721 C. Newman
Category: Standards Track Oracle
ISSN: 2070-1721 J. Yao
CNNIC
K. Fujiwara
JPRS
March 2013
Post Office Protocol Version 3 (POP3) Support for UTF-8
Abstract
This specification extends the Post Office Protocol version 3 (POP3)
to support international strings encoded in UTF-8 in usernames,
passwords, mail addresses, message headers, and protocol-level text
strings.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6856.
Gellens, et al. Standards Track [Page 1]
RFC 6856 POP3 Support for UTF-8 March 2013
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
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Without obtaining an adequate license from the person(s) controlling
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than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Conventions Used in This Document . . . . . . . . . . . . 3
2. "UTF8" Capability . . . . . . . . . . . . . . . . . . . . . . 4
2.1. The "UTF8" Command . . . . . . . . . . . . . . . . . . . . 5
2.2. USER Argument to "UTF8" Capability . . . . . . . . . . . . 6
3. "LANG" Capability . . . . . . . . . . . . . . . . . . . . . . 7
3.1. Definition . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2. Discussion . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3. Examples . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. Non-ASCII Character Maildrops . . . . . . . . . . . . . . . . 9
5. "UTF8" Response Code . . . . . . . . . . . . . . . . . . . . . 10
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
7. Security Considerations . . . . . . . . . . . . . . . . . . . 10
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8.1. Normative References . . . . . . . . . . . . . . . . . . . 11
8.2. Informative References . . . . . . . . . . . . . . . . . . 12
Appendix A. Design Rationale . . . . . . . . . . . . . . . . . . 13
Appendix B. Acknowledgments . . . . . . . . . . . . . . . . . . . 13
Gellens, et al. Standards Track [Page 2]
RFC 6856 POP3 Support for UTF-8 March 2013
1. Introduction
This document forms part of the Email Address Internationalization
protocols described in the Email Address Internationalization
Framework document [RFC6530]. As part of the overall Email Address
Internationalization work, email messages can be transmitted and
delivered containing a Unicode string encoded in UTF-8 in the header
and/or body, and maildrops that are accessed using POP3 [RFC1939]
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