Is forwarding mail something your users never do? Or do you think the sender should be able to specify that the mail can't be forwarded?
With the exception of a pure -all record, policy enforcement based purely on spf is a poor choice. Maybe, depending on your users, it won't raise the fp rate that much. OTOH, if you just reject without letting in a fraction, how do you even know what your fp rate is? Waiting for feedback from your users that they're missing messages they may not even know they should have gotten is a poor way to measure effectiveness. Brandon On May 19, 2017 9:34 PM, <frnk...@iname.com> wrote: > John, > > I'm a bit bewildered -- these aren't random strangers, they're the actual > sender. Am I supposed to second-guess the sender's instructions? If I > have > to second-guess every sender's "-all" then I have to have another layer of > subjective analysis -- currently manual, in my situation. > > Frank > > > -----Original Message----- > From: John R Levine [mailto:jo...@taugh.com] > Sent: Friday, May 19, 2017 7:22 PM > To: frnk...@iname.com > Cc: mailop@mailop.org > Subject: RE: [mailop] Many SPF failures lately > > > Yet the senders, via their SPF records with a "-all", told me to reject > those messages. As MTA's, we're doing what the send told us to do. > > I don't know about you, but I do not blindly follow instructions from > random strangers. It rarely leads to good outcomes. > > > For my users, I have the quaint idea that I should try and deliver the > > mail that they obviously want. > > Regards, > John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY > Please consider the environment before reading this e-mail. https://jl.ly > > > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop >
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