STD 10

RFC 821

"Simple Mail Transfer Protocol", August 1982

Canonical URL:

http://www.rfc-editor.org/rfc/rfc821.txt
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Status:

INTERNET STANDARD

Obsoletes:

RFC 788

Obsoleted by:

RFC 2821

Author:

J. Postel

Stream:

[Legacy]

Please refer here for any errata for this document. To submit a new errata report, go to the main errata page.

Abstract

The objective of Simple Mail Transfer Protocol (SMTP) is to transfer mail reliably and efficiently. SMTP is independent of the particular transmission subsystem and requires only a reliable ordered data stream channel. Obsoletes RFC 788, 780, and 772.

For the definition of Stream, see RFC 4844.