On Tue, 9 Aug 2022, Bill Cole wrote:
On 2022-08-09 at 12:50:22 UTC-0400 (Tue, 9 Aug 2022 12:50:22 -0400)
Dino Edwards <dino.edwa...@mydirectmail.net>
is rumored to have said:
Let's do some concreate tests.
1) What is the output from:
dig +short 2.0.0.127.zen.spamhaus.org
Output is nothing
Your DNS resolver is broken. That's a test name which should always return
either multiple results like this:
$ dig +short 2.0.0.127.zen.spamhaus.org
127.0.0.4
127.0.0.2
127.0.0.10
Or a single result like this:
$ dig @9.9.9.9 +short 2.0.0.127.zen.spamhaus.org
127.255.255.254
Getting no result at all is a bit mysterious. Try just 'dig
2.0.0.127.zen.spamhaus.org' to get possibly useful details, including what
exactly 'dig' asked, what nameserver it asked, and what if any response it
got.
I just tested using 8.8.8.8 and it gives an empty result (and w/o +short you see
that it is indeed NXDOMAIN).
However, with 1.1.1.1 it gives 127.255.255.254.
In any case, the OP may well be using a local resolver, but they didn't say
whether it's resolving recursively or forwarding (e.g. to 8.8.8.8), and I'd bet
it's the latter.
..
[further very useful comments from Bill Cole snipped]
Cheers.
