SMTP Service Extension for Indicating the Responsible Submitter of an E-Mail Message
RFC 4405

Revision differences

Document history

Date By Action
2026-05-20
 (System) Changed metadata: changed keywords to '['spam', 'spoofing', 'phishing']' from '[]'
2026-05-20
 (System) Metadata update from RFC Editor
2026-05-20
 (System) Changed author "H. Katz": changed name from "Harry Katz" to "H. Katz", cleared country (was "USA"), changed order from "0" to "2"
2026-05-20
 (System) Changed author "E. Allman": changed name from "Eric Allman" to "E. Allman", cleared country (was "USA")
2026-05-20
 (System) Metadata update from RFC Editor
2020-02-12
 (System) Received changes through RFC Editor sync (changed standardization level to Historic)
2020-02-07
 Amy Vezza New status of Historic approved by the IESG
https://datatracker.ietf.org/doc/status-change-change-sender-id-to-historic/
2012-02-28
 (System)
Posted related IPR disclosure: Andrew Sullivan's Statement about IPR related to RFC 4405, RFC 4406, RFC 4407, and RFC 4408 belonging to …
Posted related IPR disclosure: Andrew Sullivan's Statement about IPR related to RFC 4405, RFC 4406, RFC 4407, and RFC 4408 belonging to Microsoft Corporation
2006-05-03
 Amy Vezza State Changes to RFC Published from RFC Ed Queue by Amy Vezza
2006-05-03
 Amy Vezza [Note]: 'RFC 4405' added by Amy Vezza
2006-04-28
 (System) RFC published