RFC 4954 · PROPOSED STANDARD · 2007

SMTP Service Extension for Authentication

Overview

RFC 4954, “SMTP Service Extension for Authentication”, is a Proposed Standard document published in July 2007 by R. Siemborski, A. Melnikov. It updates RFC 3463. It obsoletes RFC 2554. It has since been updated by RFC 5248. The canonical text is published by the RFC Editor.

Abstract

This document defines a Simple Mail Transport Protocol (SMTP) extension whereby an SMTP client may indicate an authentication mechanism to the server, perform an authentication protocol exchange, and optionally negotiate a security layer for subsequent protocol interactions during this session. This extension includes a profile of the Simple Authentication and Security Layer (SASL) for SMTP.

This document obsoletes RFC 2554. [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 4954 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC obsoletes
RFC 2554
This RFC updates
RFC 3463
Updated by
RFC 5248
Other RFCs from 2007

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