ietf-corpus

rfc-2821

Simple Mail Transfer Protocol

J. Klensin (Editor)

date2001-04 streamIETF areaapp wgdrums statusPROPOSED STANDARD pages79 canonicalhttps://www.rfc-editor.org/rfc/rfc2821 doi10.17487/RFC2821 errataview

This document is a self-contained specification of the basic protocol for the Internet electronic mail transport. [STANDARDS-TRACK]

obsoleted by

rfc-5321 — Simple Mail Transfer Protocol

obsoletes

rfc-1869 — SMTP Service Extensions
rfc-821 — Simple Mail Transfer Protocol
rfc-974 — Mail routing and the domain system

updated by

rfc-5336 — SMTP Extension for Internationalized Email Addresses