RFC 1845: SMTP Service Extension for Checkpoint/Restart

This memo defines an extension to the SMTP service whereby an interrupted SMTP transaction can be restarted at a later time without having to repeat all of…

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Outgoing relationships (2 related RFCs)

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 1651: SMTP Service Extensions

Incoming relationships (4 related RFCs)

Informatively referenced by — RFC 4409: Message Submission for Mail
Informatively referenced by — RFC 6409: Message Submission for Mail
Informatively referenced by — RFC 2476: Message Submission
Informatively referenced by — RFC 6710: Simple Mail Transfer Protocol Extension for Message Transfer Priorities