RFC 630 · UNKNOWN · 1974
WED · 17 JUN 2026
FTP error code usage for more reliable mail service
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.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 630 is hosted at rfc-editor.org. Available in TXT,HTML.
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- RFC 631 International meeting on minicomputers and data communication: Call for papers
- RFC 628 Status of RFC numbers and a note on pre-assigned journal numbers
- RFC 632 Throughput degradations for single packet messages
- RFC 627 ASCII text file of hostnames
- RFC 633 IMP/TIP preventive maintenance schedule
- RFC 626 On a possible lockup condition in IMP subnet due to message sequencing
- RFC 634 Change in network address for Haskins Lab