SMTP Service Extension for Authentication, July 2007
- Canonical URL:
- File formats:
- PROPOSED STANDARD
- RFC 2554
- RFC 3463
- Updated by:
- RFC 5248
- R. Siemborski, Ed.
A. Melnikov, Ed.
- NON WORKING GROUP
Discuss this RFC: Send questions or comments to firstname.lastname@example.org
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 4844.