+1 Tim (just a fan of https://www.ietf.org/archive/id/draft-levine-dbound-dns-03.txt)
On Sun, Dec 8, 2019 at 4:58 PM John Levine <[email protected]> wrote: > In article <CADyWQ+HparFd6ubzr46mo63=oSrRqu1cjo0Xq=ZpERn+Yxx3= > [email protected]> you write: > >So we could decide on doing a combinatory of #3 and #1, with the right > >mechanisms. > > Publishing a list of PSD superdomains in the DNS is pretty trivial > using my dbound scheme, and should typically find out whether any name > needs a PSD check with one DNS query. The total zone for the PSL is > under 10K records, so doing a local mirror should be easy, too. > > R's, > John >
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