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Old 04-17-2011, 02:55 PM   #1
arnoldrodrigues
LQ Newbie
 
Registered: Jun 2007
Posts: 1

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Reverse DNS Does Not Resolve


I'm from an ISP company. I'm not able to resolve reverse DNS. The domain registar and web-hosting site are both different. The IP pool has been provided to us by apnic & are trying to configure DNS at our end.

The reverse dns resolve gives an ouput mentioned below in AUTHORITY SECTION.

Thanks In Advance.

;; AUTHORITY SECTION:
49.in-addr.arpa. 8021 IN SOA ns1.apnic.net. read-txt-record-of-zone-first-dns-admin.apnic.net. 2722 7200 1800 604800 172800



[root@ns1 ~]# dig ns1.wnet.net.in

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> ns1.wnet.net.in
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61356
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;ns1.wnet.net.in. IN A

;; ANSWER SECTION:
ns1.wnet.net.in. 14400 IN A 49.128.160.13

;; AUTHORITY SECTION:
wnet.net.in. 71404 IN NS 1.nseasy.com.
wnet.net.in. 71404 IN NS 2.nseasy.com.

;; ADDITIONAL SECTION:
1.nseasy.com. 14372 IN A 67.18.247.2
2.nseasy.com. 14372 IN A 67.18.248.82

;; Query time: 298 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Apr 18 00:12:40 2011
;; MSG SIZE rcvd: 123



[root@ns1 ~]# dig -x 49.128.160.13

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> -x 49.128.160.13
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 63381
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;13.160.128.49.in-addr.arpa. IN PTR

;; AUTHORITY SECTION:
49.in-addr.arpa. 8021 IN SOA ns1.apnic.net. read-txt-record-of-zone-first-dns-admin.apnic.net. 2722 7200 1800 604800 172800

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Apr 18 00:14:31 2011
;; MSG SIZE rcvd: 133

REVERSE ZONE FILE

$TTL 86400
@ IN SOA ns1.wnet.net.in. root.wnet.net.in. (
2011041401 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL
)

IN NS ns1.wnet.net.in.

IN MX 10 wnet.net.in.

13 IN PTR ns1.wnet.net.in.
14 IN PTR ns2.wnet.net.in.

Last edited by arnoldrodrigues; 04-17-2011 at 09:31 PM.
 
Old 04-17-2011, 03:21 PM   #2
Franciozzy
LQ Newbie
 
Registered: Apr 2011
Posts: 8

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Could you include the server configuration for the reverse addresses?

If you are using bind, that would be /etc/bind/named.conf (or the file where you declared the zone) and something like /etc/bind/db.160.128.49.in-addr.arpa
 
Old 04-18-2011, 09:12 AM   #3
Franciozzy
LQ Newbie
 
Registered: Apr 2011
Posts: 8

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Quote:
Originally Posted by arnoldrodrigues View Post
REVERSE ZONE FILE

$TTL 86400
@ IN SOA ns1.wnet.net.in. root.wnet.net.in. (
2011041401 ;Serial
3600 ;Refresh
1800 ;Retry
604800 ;Expire
86400 ;Minimum TTL
)

IN NS ns1.wnet.net.in.

IN MX 10 wnet.net.in.

13 IN PTR ns1.wnet.net.in.
14 IN PTR ns2.wnet.net.in.
I don't think this is affecting your setup, but for sure it doesn't make sense to have a MX entry in the reverse file, so delete that line. Also, could you please share how you are declaring the zone in the bind configuration (i.e. the "zone" entry in the /etc/bind/named.conf)?

Is there any meaningful message on /var/log ?

Cheers
 
Old 04-18-2011, 12:54 PM   #4
bathory
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Registered: Jun 2004
Location: Piraeus
Distribution: Slackware
Posts: 11,900

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Quote:
The IP pool has been provided to us by apnic & are trying to configure DNS at our end.
The reverse dns resolve gives an ouput mentioned below in AUTHORITY SECTION.
You should ask the provider of these IPs to delegate to you the administration of them. You can read more about Classless IN-ADDR.ARPA Delegation, here

Regards
 
  


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