DNS - how to set up correctly?

N

Newbee

Verified User
Joined
Feb 18, 2005
Messages
35
Hi All

I've had a few 'slowdowns' lately and recent 'whois''s have shown they have been 'unable to validate IP'. Although everything seems to be working fine now - how can I check that my DNS is set up correctly?

Any help greatly appreciated.
 
go to your admin panel - then the DNS administration icon. In there you should see a list of domains hosted on the server with their IP addresses. Click on the name of each to see more particulars
 
Hi Doug

Yeah they seem to be ok in the DA panel. I was just wondering whether I could check in tha actual files on the server just incase DA wasn't showing things properly? Just to double check I guess.
:-)
 
I've never personally had cause to try to check up on it like that. I'm barely able to function in DA, let alone in the server more directly. What makes you think they're wrong anyhow?
 
I have no idea what Newbee means because there's nothing in the whois spec to indicate whether or not an IP is validated.

That said, the named.conf file is at:

/etc/named.conf

and the zone files are at:

/var/named/

Are you referring to reverse lookup? Reverse lookup will only work if (a) you set it up, and (b) your provider delegates reverse DNS to your authority.

Jeff
 
Hi Jeff

I think it may only show for UK domains... Take a look at this: http://195.66.240.211/cgi-bin/whois.cgi?query=bbc.co.uk&x=12&y=6 where it says nameservers, it also 'looks up' the IPs, if there is a problem in getting those IPs it will report 'unable to validate IP'.

I 'think' everything is ok on my server now... and i think my problem occured after I specified IPs for the main NS for the domain that is used as the nameservers for all the sites on it... I basically didn't reboot the server after I had made those changes - thats what I think may have caused the problems anyway (some sites weren't resolving or were very slow).

I'll check those files you mentioned just to be on the safe side.

Thanks.
 
The original whois databases set up by Network Solutions were relational; they actually looked up the IP#s in realtime, based on the IP# in the host's whois record.

Of course when Network Solutions didn't control all the whois anymore that become somewhat unworkable.

Most whois servers just leave the IP#s out; some actually save something hardcoded in the database.

The latter results in whois records where old IP#s may be shown even though new IP#s are already being used.

Jeff
 
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