Reverse DNS Delegation Issues
Mark Andrews
Mark_Andrews at isc.org
Tue Sep 27 00:02:36 UTC 2005
> I am stuck. I am trying to setup reverse DNS on my server. I had my
> ISP setup delegation of my network to my 2 NS's but it is still not
> working. What am I missing? Please help!!!
>
> I have followed a lot of HowTo's online and still I cannot make this work.
> When I try reverse DNS lookups from such sites as www.dnsstuff.com and
> others, it fails.
>
> When I try "dig -x" locally, it is failing too.
> Grrr!!!
>
> -=-=-=-=- Here is what my ISP's zone file looks like for me -=-=-=-=-=-
> ; definition of our target 66.113.90.32 subnet ; name servers for
> subnet reverse map
> 32/28 IN NS ns1.digitalrefuge.com.
> 32/28 IN NS ns2.digitalrefuge.com.
Ok 32/28.90.113.66.IN-ADDR.ARPA. is delegated to you ...
> ; 32 network
> 33 IN CNAME 33.32/28.90.113.66.in-addr.arpa. ; qualified
> 34 IN CNAME 34.32/28
> 35 IN CNAME 35.32/28
> 36 IN CNAME 36.32/28
> 37 IN CNAME 37.32/28
> 38 IN CNAME 38.32/28
> 39 IN CNAME 39.32/28
> 40 IN CNAME 40.32/28
> 41 IN CNAME 41.32/28
> 42 IN CNAME 42.32/28
> 43 IN CNAME 43.32/28
> 44 IN CNAME 44.32/28
> 45 IN CNAME 45.32/28
> 46 IN CNAME 46.32/28
> ; 47 broadcast
>
> -=-=-=-=-=- Here is what my named.conf looks like for this zone -=-=-=-=-
> zone "33.32/28.90.113.66.in-addr.arpa" {
> type master;
> file "reverse/66.113.90.rev";
Choose a different file name for this zone.
e.g.
"reverse/66.113.90.32.rev"
> };
... but you have created a zone called 33.32/28.90.113.66.IN-ADDR.ARPA.
Remove the "33." to make it "32/28.90.113.66.IN-ADDR.ARPA".
Configure yourself as a stealth slave for 90.113.66.IN-ADDR.ARPA.
You will want this for local reverse lookups to work when your
external link is down.
zone "90.113.66.IN-ADDR.ARPA" {
type slave;
masters { 66.113.95.21; 66.113.95.22; };
file "reverse/66.113.90.rev"; (or "cache/66.113.90.rev")
notify no;
};
> zone "digitalrefuge.com" {
> type master;
> file "pz/digitalrefuge.com";
> };
>
> -=-=-=-=- Here is what my ../reverse/66.113.90.rev file looks like -=-=-=-=-
>
>
> $TTL 8H
Remove this line. It is not needed.
> $ORIGIN 33.32/28.90.113.66.IN-ADDR.ARPA.
> @ IN SOA ns1.digitalrefuge.com. hostmaster.digitalrefuge.com. (
> 2005092603 ; serial, todays date + todays serial
> #
> 8H ; refresh, seconds
> 15M ; retry, seconds
> 2W ; expire, seconds
> 3H ; minimum, seconds
> )
>
> @ IN NS ns1.digitalrefuge.com.
> @ IN NS ns2.digitalrefuge.com.
>
> 34 IN PTR 66-113-90-34.digitalrefuge.com.
> 35 IN PTR 66-113-90-35.digitalrefuge.com.
> 36 IN PTR 66-113-90-36.digitalrefuge.com.
> 37 IN PTR 66-113-90-37.digitalrefuge.com.
> 38 IN PTR 66-113-90-38.digitalrefuge.com.
> 39 IN PTR 66-113-90-39.digitalrefuge.com.
> 40 IN PTR 66-113-90-40.digitalrefuge.com.
> 41 IN PTR 66-113-90-41.digitalrefuge.com.
> 42 IN PTR 66-113-90-42.digitalrefuge.com.
> 43 IN PTR 66-113-90-43.digitalrefuge.com.
> 44 IN PTR 66-113-90-44.digitalrefuge.com.
> 45 IN PTR 66-113-90-45.digitalrefuge.com.
> 46 IN PTR 66-113-90-46.digitalrefuge.com.
>
>
> -=-=-=-=- Here is what my ../pz/digitalrefuge.com zone looks like -=-=-=-=-
>
> $TTL 8H
> @ IN SOA ns.digitalrefuge.com. hostmaster.digitalrefuge.com. (
> 2005092103 ; serial, todays date + todays serial
> #
> 8H ; refresh, seconds
> 2H ; retry, seconds
> 4W ; expire, seconds
> 1D ) ; minimum, seconds
>
> @ NS ns1.digitalrefuge.com.
> @ NS ns2.digitalrefuge.com.
>
> MX 10 mail ; Primary Mail Exchanger
>
> A 66.113.90.41
> localhost A 127.0.0.1
> 66-113-90-34 A 66.113.90.34
> 66-113-90-35 A 66.113.90.35
> 66-113-90-36 A 66.113.90.36
> 66-113-90-37 A 66.113.90.37
> 66-113-90-38 A 66.113.90.38
> 66-113-90-39 A 66.113.90.39
> 66-113-90-40 A 66.113.90.40
> 66-113-90-41 A 66.113.90.41
> 66-113-90-42 A 66.113.90.42
> 66-113-90-43 A 66.113.90.43
> 66-113-90-44 A 66.113.90.44
> 66-113-90-45 A 66.113.90.45
> 66-113-90-46 A 66.113.90.46
> ns A 66.113.90.35
> ns1 A 66.113.90.35
> ns2 A 66.113.90.36
> www A 66.113.90.41
>
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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