reverse resolution failing

[Tony Finch]

Jim Pazarena <bind at paz.bz> wrote:
>
> while it can resolve "webmail.acrodex.com" ( 139.142.184.10 )
> it cannot reverse resolve 139.142.184.10

They are using classless reverse DNS, which is fine except that the
nameservers for the target zone are very broken.

10.184.142.139.in-addr.arpa. CNAME 10.0-25.184.142.139.in-addr.arpa.

0-25.184.142.139.in-addr.arpa. NS pluto.acrodex.com.
0-25.184.142.139.in-addr.arpa. NS nova.acrodex.com.
0-25.184.142.139.in-addr.arpa. NS saturn.acrodex.com.

Nova does not exist.

Pluto refuses most questions for 10.0-25.184.142.139.in-addr.arpa except
if you ask for a PTR, in which case it replies with a bogus question
section containing 139.0.184.142.in-addr.arpa.

Saturn works OK for most questions, and returns a PTR record if you ask
for ANY, but if you request a PTR directly it ignores you.

Tony.
-- 
f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/
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