RFC 2505: Anti-Spam Recommendations for SMTP MTAs

This memo gives a number of implementation recommendations for SMTP, MTAs (Mail Transfer Agents, e.g. sendmail,) to make them more capable of reducing the…

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Outgoing relationships (3 related RFCs)

Informative reference — RFC 1034: Domain names - concepts and facilities
Informative reference — RFC 2065: Domain Name System Security Extensions
Informative reference — RFC 2476: Message Submission

Incoming relationships (3 related RFCs)

Informatively referenced by — RFC 5598: Internet Mail Architecture
Informatively referenced by — RFC 3013: Recommended Internet Service Provider Security Services and Procedures
Informatively referenced by — RFC 3865: A No Soliciting Simple Mail Transfer Protocol (SMTP) Service Extension