[dns-operations] why does that domain resolve?

[Dave Lawrence]

Tony Finch writes:
> > So, what are people's favorite tools, especially those that you can just
> > point a user at?
> 
> I wouldn't point a user at any of these unless I think they have a good
> amount of DNS expertise :-)

Indeed.  I recently had to field a complaint that invoked an analysis
by https://dnschecker.org/domain-health-checker.php as being related
to problems someone was seeing.  That report didn't show errors, but
of the eight warnings that it issued--and that the reporter thought
needed attention--they were either incorrect, irrelevant, inscrutable,
or simply wrong.