Internet Engineering Task Force (IETF) T. Hansen, Ed.
Request for Comments: 6533 AT&T Laboratories
Obsoletes: 5337 C. Newman
Updates: 3461, 3464, 3798, 6522 Oracle
Category: Standards Track A. Melnikov
ISSN: 2070-1721 Isode Ltd
February 2012
Internationalized Delivery Status and Disposition Notifications
Abstract
Delivery status notifications (DSNs) are critical to the correct
operation of an email system. However, the existing Draft Standards
(RFC 3461, RFC 3464, RFC 6522) are presently limited to ASCII text in
the machine-readable portions of the protocol. This specification
adds a new address type for international email addresses so an
original recipient address with non-ASCII characters can be correctly
preserved even after downgrading. This also provides updated content
return media types for delivery status notifications and message
disposition notifications to support use of the new address type.
This document extends RFC 3461, RFC 3464, RFC 3798, and RFC 6522.
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/rfc6533.
Hansen, et al. Standards Track [Page 1]
RFC 6533 Internationalized DSN and MDNs February 2012
Copyright Notice
Copyright (c) 2012 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
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions Used in This Document . . . . . . . . . . . . . . 3
3. UTF-8 Address Type . . . . . . . . . . . . . . . . . . . . . . 3
4. UTF-8 Delivery Status Notifications . . . . . . . . . . . . . 6
4.1. The message/global-delivery-status Media Type . . . . . . 6
4.2. The message/global Media Type . . . . . . . . . . . . . . 8
4.3. The message/global-headers Media Type . . . . . . . . . . 8
4.4. Using These Media Types with multipart/report . . . . . . 8
4.5. Additional Requirements on SMTP Servers . . . . . . . . . 9
5. UTF-8 Message Disposition Notifications . . . . . . . . . . . 9
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10
6.1. UTF-8 Mail Address Type Registration . . . . . . . . . . . 10
6.2. Update to 'smtp' Diagnostic Type Registration . . . . . . 11
6.3. message/global-headers . . . . . . . . . . . . . . . . . . 11
6.4. message/global-delivery-status . . . . . . . . . . . . . . 12
6.5. message/global-disposition-notification . . . . . . . . . 14
7. Security Considerations . . . . . . . . . . . . . . . . . . . 15
8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.1. Normative References . . . . . . . . . . . . . . . . . . . 16
8.2. Informative References . . . . . . . . . . . . . . . . . . 17
Appendix A. Changes since RFC 5337 . . . . . . . . . . . . . . . 18
Appendix B. Acknowledgements . . . . . . . . . . . . . . . . . . 18
Hansen, et al. Standards Track [Page 2]
RFC 6533 Internationalized DSN and MDNs February 2012
1. Introduction
When an email message is transmitted using the SMTPUTF8 [RFC6531]
extension and Internationalized Email Headers [RFC6532], it is
sometimes necessary to return that message or generate a Message
Disposition Notification (MDN) [RFC3798]. As a message sent to
datatracker.ietf.org