On 6/4/20 2:50 AM, Laura Atkins via mailop wrote: > You do know that spammers run ESPs and consider themselves reputable, > yes? How useful will the header be when they start putting it in even > when the mail isn’t confirmed?
My point was that if a large ESP started doing this, *and* the ESP did it reliably and honestly, *and* receiving entities noticed and believed that the ESP did it reliably and honestly, then a receiving entity could decide to start weighting that header positively for mail from that ESP. I wasn't suggesting that anyone would trust such a header without strong evidence that a particular ESP was doing it reliably and honestly. -- Robert L Mathews, Tiger Technologies, http://www.tigertech.net/ _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop