Reverse DNS Problem

Mark_Andrews at isc.org Mark_Andrews at isc.org
Sun Feb 2 01:00:24 UTC 2003


	It looks like you have worked out your problem.  That being
	that each individual reverse name was individually delegatated
	which is reasonable for three addresses.

	I would however get a second, topologically remote, nameserver
	for these zones especially as you say you need reverse
	lookup to work for these servers.

	Mark

> Hi all,
> 
> I am having a heck of a time understanding what the problem is here....
> 
> I currently have 3 servers colocated with peer1.net
> I am using 1 IP for each serrver.
> Peer 1 assures me the IPs have been delegated to my nameserver
> NS: ns1.thenetnow.com
> IPs: 65.39.193.152 , 153 , 154.
> 
> I have set up the named.conf:
> 
> 
> options {
>         directory "/etc/namedb";
>         allow-transfer { none; };
>         allow-query { any; };
> };
> ....
> 
> zone "193.39.65.IN-ADDR.ARPA" {
>         type master;
>         allow-query {any;};
>         file "masters/thenetnow.rev";
> };
> 
> 
> I have the .rev file (in masters):
> 
> 
> $TTL 1800;
> @       IN      SOA     193.39.65.IN-ADDR.ARPA. webmaster.thenetnow.com. (
>                         2003020102      ;Serial
>                         28800           ;Refresh
>                         14400           ;Retry
>                         604800          ;Expire
>                         1800 )          ;Minimum
>         IN      NS      ns1.thenetnow.com.
> 152     IN      PTR     enterprise.thenetnow.com.
> 154     IN      PTR     excelsior.thenetnow.com.
> enterprise.thenetnow.com.               IN      A       65.39.193.152
> excelsior.thenetnow.com.                IN      A       65.39.193.154
> 
> WHen I do  dig -x on the machine I get:
> 
> enterprise# dig -x 65.39.193.152
> 
> ; <<>> DiG 9.2.1 <<>> -x 65.39.193.152
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31778
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
> 
> ;; QUESTION SECTION:
> ;152.193.39.65.in-addr.arpa.    IN      PTR
> 
> ;; ANSWER SECTION:
> 152.193.39.65.in-addr.arpa. 1800 IN     PTR     enterprise.thenetnow.com.
> 
> ;; AUTHORITY SECTION:
> 193.39.65.in-addr.arpa. 1800    IN      NS      ns1.thenetnow.com.
> 
> ;; ADDITIONAL SECTION:
> ns1.thenetnow.com.      1800    IN      A       65.39.193.152
> 
> ;; Query time: 1 msec
> ;; SERVER: 127.0.0.1#53(127.0.0.1)
> ;; WHEN: Sat Feb  1 10:19:51 2003
> ;; MSG SIZE  rcvd: 116
> 
> enterprise#
> 
> But when I do the dig on any other non local machine:
> 
> host.expresshost.net >dig -x 65.39.193.152
> 
> ; <<>> DiG 8.2 <<>> -x
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 4
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
> ;; QUERY SECTION:
> ;;      152.193.39.65.in-addr.arpa, type = ANY, class = IN
> 
> ;; Total query time: 1 msec
> ;; FROM: host.expresshost.net to SERVER: default -- 64.176.60.218
> ;; WHEN: Sat Feb  1 10:20:55 2003
> ;; MSG SIZE  sent: 44  rcvd: 44
> 
> host.expresshost.net >
> 
> I have a few things on the box that won't work without reverse mapping
> working, any ideas what the problem is?
> 
> -Grant
> 
> 
> --
> -Grant
> 
> Grant W. Peel
> Server Admin
> grant at thenetnow.com
> http://thenetnow.com
> 
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org


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