linux dns(named) issue

amartlk · 05-25-2011, 01:29 AM

Hi

i have centos 5.3 installed here i installed named service i.e dns, i have mail server installed on centos 5.5 , when i make nslookup on server where i installed named i.e nslookup 192.16.1.x it ressolve to my mail server domain mail.foo.in and viceversa as but from last 2 day when i perform nslookup mail.foo.in it shows

Non-authoritative answer:
mail.foo.in canonical name = ghs.google.com.
ghs.google.com canonical name = ghs.l.google.com.
Name: ghs.l.google.com
Address: 72.14.203.121

pls help

Regards
Amar

brownie_cookie · 05-25-2011, 01:42 AM

was it always non-authoritative?
because non-authoritative means that he gets his answer from somewhere else (so your server looked in his records first but didn't find anything, so he forwarded that request)
so perhaps you start looking in your records ?

(if i get this wrong, feel free to correct me

)

amartlk · 05-25-2011, 02:06 AM

hi
yes it is always non-authoritative.

Amar

brownie_cookie · 05-25-2011, 02:14 AM

so the problem is

Code:

mail.foo.in canonical name = ghs.google.com.
ghs.google.com canonical name = ghs.l.google.com.
Name: ghs.l.google.com
Address: 72.14.203.121

Quote:

A canonical name is the properly denoted host name of a computer or network server. A CNAME specifies an alias or nickname for a canonical host name record in a domain name system (DNS) database. In programming, the term "canonical" means "according to the rules." The DNS is the standard method of defining the locations of sites on the Internet, particularly Web sites.

maybe take a look in your CNAME records?
or is this also normal?
perhaps you say what actually the problem is? what isn't normal from the code you gave us?

amartlk · 05-25-2011, 02:37 AM

hi

i checked in my dns but it not shows any cname= ghs.google.com

as my mail server is for mailing locally not for external , but now my mails going outside due to this problem , prior to this problem nslook to my ip ressolve to my local domain and vice versa but now it ressolve to google

amartlk · 05-25-2011, 04:43 AM

pls reply