On 5/14/15 11:25 AM, Paul Vixie wrote: > > > Ted Lemon wrote: >> On May 14, 2015, at 4:15 AM, Shane Kerr <sh...@time-travellers.org> wrote: >>> The main argument seems to be that because e-mail uses reverse DNS as >>> input into spam detection, it is important. The argument proceeds to >>> then say that we want every computer on the Internet to run an SMTP >>> server, so every computer needs a PTR record.
... > so, my hope is that we could recommend against machine-generated PTR's, > and recommend in favour of PTR delegation when a customer requests it, > all while understanding that ISP's will do whatever they want after they > see whatever recommendations we make. > I would vastly prefer to get a signed nxdomain from an isp then some BS machine generated record... It would be super-annoying for delegations to nameservers that do not exist to occur for these, because not only will there be trillions of them but I get to wait for them to time out, so delegation to cpe for example seems like a non-starter.
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