On 8/29/25 10:50, Alessandro Vesely wrote:
Privacy aside, RFC 5965 provides for having "Original-Rcpt-To" fields in message/feedback-report. Linkedin uses them. Currently, Original-Rcpt-To's are missing from the example in Appendix A. I'll add some.
You cited RFC5965, but aren't we building off of RFC6591 in Section 4? That spec doesn't mention Original-Rcpt-To: - though it does mention Original-Envelope-Id and Original-Mail-From:, so it seems safe to say they knew it was available if they wanted it. I don't think the OpenDMARC milter includes that header by default, and looking at historical reports, it doesn't look like Hotmail or NetEase included it either.
Even if the consensus is that we wanted to include Original-Rcpt-To: as optional in Section 4, and in the Appendix, as an example of reports being sent "in the wild," I think we want to make sure situation's like what Todd presented are covered by Section 7.
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