File formats:

Status:

PROPOSED STANDARD

Obsoletes:

RFC 2554

Updates:

RFC 3463

Updated by:

RFC 5248

Authors:

R. Siemborski, Ed.
A. Melnikov, Ed.

Stream:

IETF

Source:

NON WORKING GROUP

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC4954

Discuss this RFC: Send questions or comments to the mailing list iesg@ietf.org

Other actions: View Errata  |  Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 4954

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]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.