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I have a centos 5 box and can ping outside by IP but not by hostname.

For example, ping to a known server works fine using IP but not with HOSTNAME.

Any ideas how to trouble shoot this? Other computers inside the network are fine.

Thanks, Graham

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What error are you receiving? hostname unreachable? – John T Dec 11 '09 at 20:48
Would you perhaps be so polite as to mark the answer as such? :) – Zsub Apr 1 '10 at 19:50
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You probably have an incorrect dns server set. Check /etc/resolv.conf and make sure nameserver xxx.xxx.xxx.xxx is your actual DNS server

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Thanks for the tip – Graham Clarke Dec 11 '09 at 21:04
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