My testing was done more than a year ago. My recollection is that I discovered it based on something in the wild, and then confirmed it with a locally-configured experiment. This time I am having trouble finding examples.
The only one I can verify is from a previous email exchange on this forum: mail.foodnetwork.com returns NXDOMAIN but _dmarc.mail.foodnetwork.com returns DATA for type=TXT On Mon, Jun 27, 2022 at 9:52 AM Todd Herr <todd.h...@valimail.com> wrote: > On Sun, Jun 26, 2022 at 1:27 PM Douglas Foster < > dougfoster.emailstanda...@gmail.com> wrote: > >> Our draft references and repeats RFC 8020, which asserts that >> >> "when a DNS resolver receives a response with a response code of >> NXDOMAIN, it means that the domain name which is thus denied AND ALL THE >> NAMES UNDER IT do not exist." >> >> My testing indicates that this is not correct. NXDOMAIN means that no >> resource records exist for the specified domain name. The domain may >> contain subdomain nodes which may contain resource records. >> >> My testing performed on Windows. >> >> Can someone else test this and report your results? >> >> > It might help further the discussion if you were to favor the rest of us > with the examples you used. > > Specifically, for which domain name did you query and received an NXDOMAIN > response, and for which subdomain node of that domain did you query and > receive resource record(s) in return? > -- > > *Todd Herr * | Technical Director, Standards and Ecosystem > *e:* todd.h...@valimail.com > *m:* 703.220.4153 > > This email and all data transmitted with it contains confidential and/or > proprietary information intended solely for the use of individual(s) > authorized to receive it. If you are not an intended and authorized > recipient you are hereby notified of any use, disclosure, copying or > distribution of the information included in this transmission is prohibited > and may be unlawful. Please immediately notify the sender by replying to > this email and then delete it from your system. >
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