Sometimes i get "The requested URL could not be retrieved"

Hello everybody,
I'm using SuSe Linux V. 6.2 and Squid Stable 5. Normally all is fine. But two times i get the following result :

The requested URL could not be retrieved

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While trying to retrieve the URL: http://europe.jobs.hp.com/

The following error was encountered:

  Unable to determine IP address from host name for europe.jobs.hp.com
The dnsserver returned:

  DNS Domain 'europe.jobs.hp.com' is invalid: Host not found (authoritative).
This means that:

 The cache was not able to resolve the hostname presented in the URL.
 Check if the address is correct.

But That's not the Problem, because when i look by host, i become the IP-Number of this Site and when i'm looking for DNS it's O.K. .
All other Sites are O.K. only this by HP and another by IBM. What is the problem ???

Best regards

Olaf Matthaei

--
matthaei@narz.de
Tel.  : 0421/5762 115
Fax  : 0421/5762 299