In article <d034aac6-e50c-8e6b-16f1-8c41e711b...@tana.it> you write: >In the pre-DMARC era, we've been mainly using just From:. Sender: is used by >Outlook to display "on behalf of" catchphrase, presumably in an attempt to >support the historic Sender-Id protocol.
Sorry, no. That is completely wrong. The Sender field has been part of e-mail since RFC 724 in 1977. The now-dead Sender-ID didn't come along until the 2000s. Outlook's annoying "on behalf of" at least matches the intention of the Sender field. This might be a good time to read up on mail history rather than guessing. R's, John _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
