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https://datatracker.ietf.org/doc/draft-ietf-drums-smtpupd

RFC 2821: Simple Mail Transfer Protocol

Simple Mail Transfer Protocol (RFC 2821, April 2001; obsoleted by RFC 5321)



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RFC 2821: Simple Mail Transfer Protocol

https://datatracker.ietf.org/doc/draft-ietf-drums-smtpupd

Simple Mail Transfer Protocol (RFC 2821, April 2001; obsoleted by RFC 5321)



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https://datatracker.ietf.org/doc/draft-ietf-drums-smtpupd

RFC 2821: Simple Mail Transfer Protocol

Simple Mail Transfer Protocol (RFC 2821, April 2001; obsoleted by RFC 5321)

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      This document is a self-contained specification of the basic protocol for the Internet electronic mail transport. [STANDARDS-TRACK]
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