In other words, you need to call your ISP and ask them to add a reverse DNS record from the IP to your domain.
They are the ones that could do it.
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Question
How do i setup a PTR record in Linux bind?
I need 12.19.49.230 to resolve to janpak.com
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Answers
Is the DNS server is hosted in your office ??? or its in ISP ?
I can see the result of NS server is
[root@smtp ~]# host jnpc2.janpac.com.
jnpc2.janpac.com has address 12.19.49.229
[root@smtp ~]# host jnpc1.janpac.com.
jnpc1.janpac.com has address 12.19.49.228
If the janpac.com DNS server is hosted in your office in linux with bind then if you want add on that ???
you can follow the steps else you can change the necessary information in your website Control panel.
steps to add PTR record.
Reverse Zone File
Now that the zone is setup and resolving names to IP Adresses a Reverse zone is also required. A Reverse zone allows DNS to resolve an address to a name.
Edit /etc/bind/named.conf.local
zone "1.168.192.in-addr.arpa" {
type master;
notify no;
file "/etc/bind/db.192";
};
[Note]
Replace 1.168.192 with the first three octets of whatever network you are using. Also, name the zone file /etc/bind/db.192 appropriately. It should match the first octet of your network.
Now create the /etc/bind/db.192 file:
sudo cp /etc/bind/db.127 /etc/bind/db.192
Next edit /etc/bind/db.192 changing the basically the same options as /etc/bind/db.example.com:
;
; BIND reverse data file for local loopback interface
;
$TTL 604800
@ IN SOA ns.example.com. root.example.com. (
2 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS ns.
10 IN PTR ns.example.com.
The Serial Number in the Reverse zone needs to be incremented on each changes as well. For each A record you configure in /etc/bind/db.example.com you need to create a PTR record in /etc/bind/db.192.
After creating the reverse zone file restart BIND9:
sudo /etc/init.d/bind9 restart
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by: ravenplPosted on 2009-10-23 at 01:26:44ID: 25642238
# host -a 49.19.12.in-addr.arpa
;; QUESTION SECTION:
;49.19.12.in-addr.arpa. IN ANY
;; AUTHORITY SECTION:
12.in-addr.arpa. 86400 IN NS DBRU.BR.NS.ELS-GMS.ATT.NET
12.in-addr.arpa. 86400 IN NS CMTU.MT.NS.ELS-GMS.ATT.NET
12.in-addr.arpa. 86400 IN NS DMTU.MT.NS.ELS-GMS.ATT.NET
12.in-addr.arpa. 86400 IN NS CBRU.BR.NS.ELS-GMS.ATT.NET
;; ADDITIONAL SECTION:
DBRU.BR.NS.ELS-GMS.ATT.NET
CMTU.MT.NS.ELS-GMS.ATT.NET
DMTU.MT.NS.ELS-GMS.ATT.NET
CBRU.BR.NS.ELS-GMS.ATT.NET
As You can see Your rev-dns zone is not configured nor delegated.
You may ask ELS-GMS.ATT.NET to delegate the zone to You (or the single 230.49.19.12.in-addr.arpa record if don't run whole 256 IPs).