File formats:

Status:

INTERNET STANDARD

Obsoletes:

RFC 788

Obsoleted by:

RFC 2821

Author:

J. Postel

Stream:

[Legacy]

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC0821

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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 Status, see RFC 2026.

For the definition of Stream, see RFC 8729.