Am 17.02.20 um 19:21 schrieb Alessandro Vesely via mailop: > On Sun 16/Feb/2020 15:21:34 +0100 Hans-Martin Mosner via mailop wrote: >> (opinionated) Don' use SPF, it's broken by design. > > I don't think that a FAQ starting with such opinionated entries is going > anywhere. > > > Best > Ale
I deliberately did not start the list with this, instead put it as the last point because I know opinions differ on this topic. A public FAQ should probably not be place this into the "agreed-upon best practices" but the "controversial opinions" department. My personal experience with SPF is that it is less helpful than harmful, at least when mail server operators use it for rejection instead of tagging. It can help reject some mails with fake sender information, but at the same time it prevents some legitimate forwarded mails from getting through. I do know about SRS, even had it running some time ago, and if someone wants to run it to improve deliverability of forwarded mail that's perfectly fine with me. But if you run a mail server and your users aren't getting mails forwarded from their accounts on other mail servers because you reject based on SPF, you're not exactly helping deliverability. Cheers, Hans-Martin _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
