RFC 630 · UNKNOWN · 1974 TUE · 15 SEP 2026

FTP error code usage for more reliable mail service

By J. Sussman · Published April 1974 · DOI 10.17487/RFC0630

Overview

RFC 630, “FTP error code usage for more reliable mail service”, is an Unknown document published in April 1974 by J. Sussman. The canonical text is published by the RFC Editor.

Abstract

Describes FTP reply-code usage in TENEX mail processing.

Abstract as published in the RFC, via rfc-editor.org.

What “Unknown” means

The standards-track status of this early RFC was never formally classified.

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