rfc-3463
Enhanced Mail System Status Codes
This document defines a set of extended status codes for use within the mail system for delivery status reports, tracking, and improved diagnostics. In combination with other information provided in the Delivery Status Notification (DSN) delivery report, these codes facilitate media and language independent rendering of message delivery status. [STANDARDS-TRACK]
obsoletes
- rfc-1893 — Enhanced Mail System Status Codes
updated by
- rfc-3886 — An Extensible Message Format for Message Tracking Responses
- rfc-4468 — Message Submission BURL Extension
- rfc-4865 — SMTP Submission Service Extension for Future Message Release
- rfc-4954 — SMTP Service Extension for Authentication
- rfc-5248 — A Registry for SMTP Enhanced Mail System Status Codes