RFC 2554: SMTP Service Extension for Authentication

This document defines an SMTP service extension [ESMTP] whereby an SMTP client may indicate an authentication mechanism to the server, perform an…

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Outgoing relationships (8 related RFCs)

Informative reference — RFC 822: STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGES
Informative reference — RFC 2234: Augmented BNF for Syntax Specifications: ABNF
Informative reference — RFC 821: Simple Mail Transfer Protocol
Informative reference — RFC 2222: Simple Authentication and Security Layer (SASL)
Informative reference — RFC 1869: SMTP Service Extensions
Informative reference — RFC 1891: SMTP Service Extension for Delivery Status Notifications
Informative reference — RFC 2195: IMAP/POP AUTHorize Extension for Simple Challenge/Response
Informative reference — RFC 2476: Message Submission

Incoming relationships (11 related RFCs)

Obsoleted by, Informatively referenced by — RFC 4954: SMTP Service Extension for Authentication
Normatively referenced by — RFC 3887: Message Tracking Query Protocol
Normatively referenced by — RFC 4405: SMTP Service Extension for Indicating the Responsible Submitter of an E-Mail Message
Normatively referenced by — RFC 4550: Internet Email to Support Diverse Service Environments (Lemonade) Profile
Normatively referenced by — RFC 3848: ESMTP and LMTP Transmission Types Registration
Informatively referenced by — RFC 4409: Message Submission for Mail
Informatively referenced by — RFC 4616: The PLAIN Simple Authentication and Security Layer (SASL) Mechanism
Informatively referenced by — RFC 4408: Sender Policy Framework (SPF) for Authorizing Use of Domains in E-Mail, Version 1
Informatively referenced by — RFC 3013: Recommended Internet Service Provider Security Services and Procedures
Informatively referenced by — RFC 4643: Network News Transfer Protocol (NNTP) Extension for Authentication
Informatively referenced by — RFC 3117: On the Design of Application Protocols