RFC 772 · UNKNOWN · 1980
MON · 27 JUL 2026
Mail Transfer Protocol
Overview
RFC 772, “Mail Transfer Protocol”, is an Unknown document published in September 1980 by S. Sluizer, J. Postel. It has been obsoleted by RFC 780 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 772 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1980
- RFC 771 Mail transition plan
- RFC 773 Comments on NCP/TCP mail service transition strategy
- RFC 770 Assigned numbers
- RFC 774 Internet Protocol Handbook: Table of contents
- RFC 769 Rapicom 450 facsimile file format
- RFC 775 Directory oriented FTP commands
- RFC 768 User Datagram Protocol
- RFC 767 Structured format for transmission of multi-media documents