RFC 3461 (rfc3461) - Page 1 of 38
Simple Mail Transfer Protocol (SMTP) Service Extension for Delivery Status Notifications (DSNs)
Alternative Format: Original Text Document
Network Working Group K. Moore
Request for Comments: 3461 University of Tennessee
Obsoletes 1891 January 2003
Category: Standards Track
Simple Mail Transfer Protocol (SMTP) Service Extension
for Delivery Status Notifications (DSNs)
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
Abstract
This memo defines an extension to the Simple Mail Transfer Protocol
(SMTP) service, which allows an SMTP client to specify (a) that
Delivery Status Notifications (DSNs) should be generated under
certain conditions, (b) whether such notifications should return the
contents of the message, and (c) additional information, to be
returned with a DSN, that allows the sender to identify both the
recipient(s) for which the DSN was issued, and the transaction in
which the original message was sent.
Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in BCP 14, RFC 2119 [7].
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Framework for the Delivery Status Notification Extension . . . 4
3. The Delivery Status Notification service extension . . . . . . 5
4. Additional parameters for RCPT and MAIL commands . . . . . . . 6
4.1 The NOTIFY parameter of the ESMTP RCPT command. . . . . . . . 7
4.2 The ORCPT parameter to the ESMTP RCPT command . . . . . . . . 8
4.3 The RET parameter of the ESMTP MAIL command . . . . . . . . . 9
4.4 The ENVID parameter to the ESMTP MAIL command . . . . . . . . 9
Moore Standards Track