Reference document

Org
IETF
Pubnum
RFC 5321
Date
2008
Version
Title
Simple Mail Transfer Protocol

Applicability

This document is a specification of the basic protocol for Internet electronic mail transport. It consolidates, updates, and clarifies several previous documents, making all or parts of most of them obsolete. It covers the SMTP extension mechanisms and best practices for the contemporary Internet, but does not provide details about particular extensions. Although SMTP was designed as a mail transport and delivery protocol, this specification also contains information that is important to its use as a mail submission protocol for split-UA (User Agent) mail reading systems and mobile environments.

Responsible Party

Name
FMN CPWG

Status

URI
http://tools.ietf.org/html/rfc5321

History

Flag Date RFC Version
added 2013-10-22 7-27 8.0
changed 2017-01-14 9-17 10.0
UUID
c29e83cc-a7f2-4b89-98bc-34d4583a7a27

Relationships

This standard is used by the following service profiles: