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Simple Mail Transfer Protocol (SMTP) Service Extension for Delivery Status Notifications (DSNs) (RFC3461)

IP.com Disclosure Number: IPCOM000011356D
Original Publication Date: 2003-Jan-01
Included in the Prior Art Database: 2003-Feb-14
Document File: 39 page(s) / 76K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Moore: AUTHOR

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.

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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� � � � � � � � � � � � � � � � � � � � [Page 1]

RFC 3461� � � � � � � � � � � � � � � � � � SMTP DSN Extension� � � � � � � � � � � � � � January 2003

� � 4.5 Restrictions on the use of Delivery Status Notification

� � � � � � parameters. . . . . . . . . . . . . . . . . . . . . . . . . . 10

� � 5. Conformance requirements . . . . . . . . . . . . . . . . . . . 10

� � 5.1 SMTP protocol interactions. . . . . . . . . . . . . . . . . . 11

� � 5.2 Handling of messages received via SMTP. . . . . . . . . . . . 11

� � 5.2.1 Relay of messages to other conforming SMTP servers. . . . . 12

� � 5.2.2 Relay of mes...