RFC 6409: Message Submission for Mail

This memo splits message submission from message relay, allowing each service to operate according to its own rules (for security, policy, etc.), and…

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Outgoing relationships (23 related RFCs)

Obsoletes, Informative reference — RFC 4409: Message Submission for Mail
Normative reference — RFC 5321: Simple Mail Transfer Protocol
Informative reference — RFC 4301: Security Architecture for the Internet Protocol
Informative reference — RFC 5322: Internet Message Format
Informative reference — RFC 3501: INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1
Informative reference — RFC 5751: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.2 Message Specification
Informative reference — RFC 3207: SMTP Service Extension for Secure SMTP over Transport Layer Security
Informative reference — RFC 3461: Simple Mail Transfer Protocol (SMTP) Service Extension for Delivery Status Notifications (DSNs)
Informative reference — RFC 4880: OpenPGP Message Format
Informative reference — RFC 6376: DomainKeys Identified Mail (DKIM) Signatures
Informative reference — RFC 3463: Enhanced Mail System Status Codes
Informative reference — RFC 2034: SMTP Service Extension for Returning Enhanced Error Codes
Informative reference — RFC 1870: SMTP Service Extension for Message Size Declaration
Informative reference — RFC 3030: SMTP Service Extensions for Transmission of Large and Binary MIME Messages
Informative reference — RFC 1985: SMTP Service Extension for Remote Message Queue Starting
Informative reference — RFC 3885: SMTP Service Extension for Message Tracking
Informative reference — RFC 6152: SMTP Service Extension for 8-bit MIME Transport
Informative reference — RFC 2852: Deliver By SMTP Service Extension
Informative reference — RFC 1845: SMTP Service Extension for Checkpoint/Restart
Informative reference — RFC 1846: SMTP 521 Reply Code
Informative reference — RFC 2645: ON-DEMAND MAIL RELAY (ODMR) SMTP with Dynamic IP Addresses
Informative reference — RFC 4141: SMTP and MIME Extensions for Content Conversion
Informative reference — RFC 3865: A No Soliciting Simple Mail Transfer Protocol (SMTP) Service Extension

Incoming relationships (12 related RFCs)

Updated by, Normatively referenced by — RFC 8314: Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access
Normatively referenced by — RFC 6531: SMTP Extension for Internationalized Email
Normatively referenced by — RFC 6710: Simple Mail Transfer Protocol Extension for Message Transfer Priorities
Normatively referenced by — RFC 6785: Support for Internet Message Access Protocol (IMAP) Events in Sieve
Normatively referenced by — RFC 7817: Updated Transport Layer Security (TLS) Server Identity Check Procedure for Email-Related Protocols
Normatively referenced by — RFC 6758: Tunneling of SMTP Message Transfer Priorities
Normatively referenced by — RFC 6783: Mailing Lists and Non-ASCII Addresses
Informatively referenced by — RFC 6530: Overview and Framework for Internationalized Email
Informatively referenced by — RFC 7672: SMTP Security via Opportunistic DNS-Based Authentication of Named Entities (DANE) Transport Layer Security (TLS)
Informatively referenced by — RFC 8689: SMTP Require TLS Option
Informatively referenced by — RFC 9787: Guidance on End-to-End Email Security
Informatively referenced by — RFC 9422: The LIMITS SMTP Service Extension