RFC 1891 · PROPOSED STANDARD · 1996

SMTP Service Extension for Delivery Status Notifications

Overview

RFC 1891, “SMTP Service Extension for Delivery Status Notifications”, is a Proposed Standard document published in January 1996 by K. Moore. It has been obsoleted by RFC 3461 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

This memo defines an extension to the 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. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 1891 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
Obsoleted by
RFC 3461
Other RFCs from 1996

Who Is Online

In total there are 64 users online: 0 registered, 57 guests and 7 bots.

Most users ever online was 5,555 on 17 Jul 2026, 3:23 am.

Bots: AhrefsBot Applebot Baiduspider Other Bot Other Spider PetalBot SemrushBot

Users active in the past 15 minutes. Total registered members: 372