RFC 1869: SMTP Service Extensions

This memo defines a framework for extending the SMTP service by defining a means whereby a server SMTP can inform a client SMTP as to the service extensions…

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Outgoing relationships (3 related RFCs)

Obsoletes — RFC 1651: SMTP Service Extensions
Informative reference — RFC 1521: MIME (Multipurpose Internet Mail Extensions) Part One: Mechanisms for Specifying and Describing the Format of Internet Message Bodies
Informative reference — RFC 1522: MIME (Multipurpose Internet Mail Extensions) Part Two: Message Header Extensions for Non-ASCII Text

Incoming relationships (13 related RFCs)

Obsoleted by — RFC 2821: Simple Mail Transfer Protocol
Normatively referenced by — RFC 4409: Message Submission for Mail
Normatively referenced by — RFC 3885: SMTP Service Extension for Message Tracking
Informatively referenced by — RFC 2434: Guidelines for Writing an IANA Considerations Section in RFCs
Informatively referenced by — RFC 2034: SMTP Service Extension for Returning Enhanced Error Codes
Informatively referenced by — RFC 2033: Local Mail Transfer Protocol
Informatively referenced by — RFC 2554: SMTP Service Extension for Authentication
Informatively referenced by — RFC 2421: Voice Profile for Internet Mail - version 2
Informatively referenced by — RFC 3030: SMTP Service Extensions for Transmission of Large and Binary MIME Messages
Informatively referenced by — RFC 1911: Voice Profile for Internet Mail
Informatively referenced by — RFC 3886: An Extensible Message Format for Message Tracking Responses
Informatively referenced by — RFC 2487: SMTP Service Extension for Secure SMTP over TLS
Informatively referenced by — RFC 2442: The Batch SMTP Media Type