Re: Scoring PTR's

[Jo Rhett]

Eric A. Hall wrote:

a) does the hostname in the PTR record point to a CNAME instead of an A record

That's not illegal. It's pretty common too, since subnet delegation of
in-addr space only works on /8, /16 and /24 subnets due to the way that
octets are mapped to domain name labels in that hierarchy.

No.  A CNAME can point to anything, but nothing can refer to a CNAME.

--
Jo Rhett
Network/Software Engineer
Net Consonance