Those three RFCs are experimental, and RFC 6686 ended the experiment. I'm not sure what if anything an historic experiment means. I would suggest filing an erratum on 6686 so that it obsoletes 4405-4407 and leave it at that. If we really want to make these three historic, file a further erratum on 6686 which should have have said so. R's, John >> The IESG has received a request from DMARC WG to make the >> following status changes: >> >> - RFC4405 from Experimental to Historic >> (SMTP Service Extension for Indicating the Responsible Submitter of an >> E-Mail Message) >> >> - RFC4406 from Experimental to Historic >> (Sender ID: Authenticating E-Mail) >> >> - RFC4407 from Experimental to Historic >> (Purported Responsible Address in E-Mail Messages) >> >> The supporting document for this request can be found here: >> >> https://datatracker.ietf.org/doc/status-change-change-sender-id-to-historic/
