[pedigree]

That shows that DNS isnt resolving. Try this one, which might or might not work as some hosts dont allow exec()

<?php


exec('TERM=xterm nslookup www.stopforumspam.com', $dig, $error );
echo nl2br(implode("\n",$dig));
if ($error){
exec('TERM=xterm nslookup www.stopforumspam.com 2>&1', $error );
echo "Error: ";
exit($error[0]);
}


exec('TERM=xterm dig www.stopforumspam.com', $dig, $error );
echo nl2br(implode("\n",$dig));
if ($error){
exec('TERM=xterm dig www.stopforumspam.com 2>&1', $error );
echo "Error: ";
exit($error[0]);
}
?>