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Simple Mail Transfer Protocol (SMTP)

Definition(s):

  An MTA protocol defined by IETF RFC 2821. SMTP is the most commonly used MTA protocol.
Source(s):
NIST SP 800-45 Version 2

  the primary protocol used to transfer electronic mail messages on the Internet.
Source(s):
NIST SP 1800-16B under Simple Mail Transfer Protocol from NISTIR 7387
NIST SP 1800-16C under Simple Mail Transfer Protocol from NISTIR 7387
NIST SP 1800-16D from NISTIR 7387
NISTIR 7250 under Simple Mail Transfer Protocol
NISTIR 7387 under Simple Mail Transfer Protocol