Unable to resolve name to IP

[eislander]

Hi all,

There is one computer in our office (WinXPP) where, when I try to ping, for example, our.pop3.com, I get: "Could not find host. Please check the name and try again." If I ping the numeric value of this host, I get a response. I don't have this host listed in the hosts file, but then no other computer does either, and they're all okay. It's just this one machine that can't resolve the name. We are a small office behind a wireless Belkin router/firewall, and our pop3 server is offsite. Any ideas?

Thanks to anyone who replies.

 

[Serbtastic]

What happens if you do an nslookup on our.pop3.com?

 

[eislander]

Serbtastic, thank you very much for responding.

Here is what I get on the errant machine:

c:\>nslookup our.pop3.com

*** Can't find server name for address 66.252.224.241: No response from server
Server: ns1.floridabroadband.net
Address: 66.252.228.241

DNS request timed out.
timeout was 2 seconds.
*** ns1.floridabroadband.net can't find our.pop3.com: Server failed

"our.pop3.com" is obviously not the real name. I know that 66.252.228.241 is one of the DNS servers of the office building we are in, and I get a response when I ping it from any machine. I can also ping "ns1.floridabroadband.net" .

Btw, when I run the same command from another machine, one that can ping "our.pop3.com", I get the same result, minus the "DNS request ... timout ..." part.

My thanks again for looking.

 

[eislander]

By the way I have another problem at thread605-629004 that I'm sure is related.

 

[yomato]

Type "ipconfig /all", try to ping the IP addr of your DNS.

If you don't get any response, I think it must be something about your DNS.

 

[GrnEyedLdy]

eislander,

If you can ping by IP and not by Name then you are looking at a DNS issue as Yomato said above. Check the IP settings of a 'good' machine against the IP settings of the 'bad' machine using the IPconfig /all. Are there any differences?


Patty

 

[RichardHuang]

It seems that this XP doesn't register its name properly.
On this machine, run the command:
>ipconfig/registerdns
On another machine, run
>ipconfig/flushdns
and then ping that computer again.

 

[eislander]

Richard,

Your register/flush dns suggestion worked. Thanks to you and everyone else who posted.