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Internationalized Delivery Status and Disposition Notifications (RFC6533) Disclosure Number: IPCOM000215108D
Original Publication Date: 2012-Feb-01
Included in the Prior Art Database: 2012-Feb-18
Document File: 38 page(s) / 38K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

T. Hansen: AUTHOR [+3]


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 multiple recipients can generate a status and disposition notification for each recipient, it is helpful if a client can correlate these notifications based on the recipient address it provided; thus, preservation of the original recipient is important. This specification describes how to preserve the original recipient and updates the MDN and DSN formats to support the new address types.

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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


   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

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    ( 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...