# Issue in DNS service

**URL:** <https://forums.suse.com/t/issue-in-dns-service/27035>\
**Category:** SLES Networking\
**Created:** [May 14, 2015, 11:01am UTC](https://forums.suse.com/t/issue-in-dns-service/27035 "2015-05-14T11:01:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![samiraly](https://avatars.discourse-cdn.com/v4/letter/s/e495f1/32.png) [@samiraly](https://forums.suse.com/u/samiraly)\
**Post date:** [May 14, 2015, 11:01am UTC](https://forums.suse.com/t/issue-in-dns-service/27035/1 "2015-05-14T11:01:31Z")

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Hello experts

i am new to suse , i have installed sles11 sp3 recently to use it as a test machine of oracle RAC , unfortunately i have issue with my DNS server as below  
1- DNS installed successfully and i was able to nslookup  
rac01:/var/lib/named/master # service named statusChecking for nameserver BIND  
version: 9.6-ESV-R7-P4  
CPUs found: 1  
worker threads: 1  
number of zones: 19  
debug level: 0  
xfers running: 0  
xfers deferred: 0  
soa queries in progress: 0  
query logging is OFF  
recursive clients: 0/0/1000  
tcp clients: 0/100  
server is up and running

2- nslookup out put

nslookup rac-scan  
Server: 127.0.0.1  
Address: 127.0.0.1#53

Name: rac-scan.localdomain  
Address: 192.168.56.105  
Name: rac-scan.localdomain  
Address: 192.168.56.106  
Name: rac-scan.localdomain  
Address: 192.168.56.107

3- able to reverse loockup

nslookup 192.168.56.101  
Server: 127.0.0.1  
Address: 127.0.0.1#53

101.56.168.192.in-addr.arpa name = rac01.localdomain.

4- the issue is when trying to nslookup for unknown host

nslookup unkown-host  
;; connection timed out; no servers could be reached

as you can see this is not normal output , normal output should looks like

\*\*\* Unknown can’t find hostname: Non-Existent domain

this issue prevents oracle clusterway installation , please help me get red of this issue .

Thank you  
Samir Aly

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**Author:** ![Jens-U](https://avatars.discourse-cdn.com/v4/letter/j/d78d45/32.png) [@Jens-U](https://forums.suse.com/u/Jens-U)\
**Post date:** [May 19, 2015, 6:58pm UTC](https://forums.suse.com/t/issue-in-dns-service/27035/2 "2015-05-19T18:58:09Z")

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Hi Samir,

> ;; connection timed out; no servers could be reached  
> as you can see this is not normal output

well, it depends… typical corporate DNS servers are set up in a way so that they’ll forward requests to “upper” DNS servers, i.e. via a firewall system.

Do you have a “forwarders” statement in your named.conf, and if so, are the servers configured in that statement responding to your named’s requests?

Regards,  
Jens