On 13 Nov 2019, at 02:30, Matus UHLAR - fantomas <uh...@fantomas.sk> wrote: > On 12.11.19 17:01, Viktor Dukhovni wrote: >> The correct way to verify that would be to resolve the EHLO name to >> an address, NOT to resolve the address to a name. This would then >> find no anomalies with: >> >> Received: from ehlo.example (ptr.example [192.0.2.1]) >> >> when ehlo.example also resolves to 192.0.2.1. > > I'm afraid this would have FPs too.
*Everything* short of accepting all mail regardless has false positives. -- I find Windows of absolutely no technical interest... Mac OS X is a rock -solid system that's beautifully designed. I much prefer it to Linux. -- Bill Joy
