Problems with dns setup

all of a sudden i got the following email from whm:

IMPORTANT: Do not ignore this email.
The hostname (server1.cubedhost.com) resolves to . It should resolve to 66.36.229.159. Please be sure to correct /etc/hosts as well as the 'A' entry in zone file for the domain.

Some are all of these problems can be caused by
/etc/resolv.conf being setup incorrectly. Please check this file if you
believe everything else is correct.

You may be able to
automaticly correct this problem by using the ' Add an A entry for your
hostname ' under ' Dns Functions ' in your Web Host Manager

and now my websites dont load eg http://kpopper.com. Can you tell me how to fix this problem?

thanks

 

 

 

 

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