Comments on: Configuring Reverse DNS in BIND 9

By: sadotmd

sadotmd — Thu, 02 Sep 2010 14:54:16 +0000

Right at the time!
Thanks

By: Krishnadas

Krishnadas — Mon, 30 Aug 2010 07:25:07 +0000

Very useful and simple….
Thanks

By: Ravi

Ravi — Tue, 15 Dec 2009 16:01:44 +0000

i set up reverse dns as explained by you, but reverse dns is still not working. i get followng error
** server can’t find xx.xx.xx.xx.in-addr.arpa: NXDOMAIN
while doing nslookup xx.xx.xx.xx

By: Installing BIND Server | www.pokeroconnor.com

Installing BIND Server | www.pokeroconnor.com — Wed, 21 Oct 2009 13:51:39 +0000

[...] defines forward name resolution, e.g. pokeroconnor.com to octal IP addresses (123.20.33.122). Reverse zone files then do the opposite (basically), providing octal -> name [...]

By: Punta

Punta — Sun, 11 Oct 2009 07:13:58 +0000

Clear, concise & usefull ! Thanks.

By: Phil Chen

Phil Chen — Mon, 28 Sep 2009 22:19:43 +0000

Make sure your fully qualified domains are not missing trailing . at the end. Also look for .. with no characters in between you should have at least one octet. Maybe you can post the zone file and named.conf entry.

By: irado

irado — Mon, 28 Sep 2009 17:31:13 +0000

I did exactly what you suggested but it shows error and I am unable to remove it note:

Sep 28 14:28:14 mercurio named[70000]: zone 224.54.201.in-addr.arpa/IN: loading from master file master/stemme.com.br.rev failed: empty label

obviously, the reverse is not as I expected:

root@someone/var/named/etc/namedb/master# : host 201.54.224.xxx
Host xxx.224.54.201.in-addr.arpa not found: 2(SERVFAIL)

I redone the DNS server 1.000+ times, no results at all

any hint?

TIA

By: Phil Chen

Phil Chen — Sat, 07 Mar 2009 05:00:05 +0000

Hi gj,

I don’t use my data center ISP for DNS, though they still provide the authoritive for the outside world in regards to reverse lookups on my IP space. I brought up my own DNS servers and adjusted my servers resolv.conf files to point to them instead of the ISP so all my apps rely on my own DNS servers to facilitate both forward and reverse lookups. So essentially I do not use the ISP as a master and I as the slave but have my servers application using my own DNS for lookups. I am not concerned with reverse lookups from the outside world but more with my own applications doing lookups. Though I do keep my ISP informed of what the reverse lookups should be.

I did this because my ISP screwed up reverse DNS one time and took 5 hours to fix it, something I could have fixed in possibly minutes. During this time my application specifically caused by a database that had reverse lookups on went haywire, I since turned off the DB reverse lookup setting and pointed all my servers to my own DNS servers.

By: gj

gj — Sat, 07 Mar 2009 03:38:10 +0000

thanks this was very helpful. i hope i understand right since i made a slave to lookup using my isp’s reverse record as the master. i am presuming the isp is still the authoratative owner for the reverse record but mine only showed as NON-authoratative with dig until i added this