Am I missing something obvious?
With many ISPs providing generic PTR, reject_unknown_reverse_client_hostname
is too gentle.
I'd really like to implement reject_unknown_client_hostname, but I've seen
too many cases where address->name mapping = exists, the name->address
mapping = exists, BUT the name->address mapping is in the same /24 - but off
by a couple of IPs.
Is there a test that I'm missing out on that is simply address->name mapping
= exists, and name->any address mapping = exists?
Or a chain of tests that can accomplish the same thing?
