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ObsoletedPROPOSED STANDARDLegacy stream

RFC 2554: SMTP Service Extension for Authentication

This RFC has been replaced. Do not implement against it for new work — it was formally obsoleted by RFC 4954.

Current version: RFC 4954 — SMTP Service Extension for Authentication

In plain English — editorial summary, not part of the RFC

This document defines an SMTP service extension [ESMTP] 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. [STANDARDS-TRACK]

Document record

Document ID
RFC2554
Published
March 1999
Authors
J. Myers
Status
PROPOSED STANDARD
Stream
Legacy
Area
—
Pages
11
Also known as
—
Obsoleted by:
RFC 4954

Topics

Referenced by

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/2554-smtp-service-extension-for-authentication