readfile error

I just change my server i have a dedicated server but now my site show this error:

Warning: readfile(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /home/intercam/public_html/ens/includes/derechan.php on line 6

the line in question has:
<? readfile(“http://www.intercampusweb.com/interamigos/clasificados.php“) ?>

my php is not running on safe mode, anyone knows how can this work as it did on my other server?

Look how in this server works great (images not showing ’cause are no longer on that location but script works fine).

[url]http://66.225.237.219/~intercam/ens/includes/oldserver.php[/url]

now same code on the new one:
(shows the errors after like 25 seconds)
[url]http://intercampusweb.com/ens/includes/newserver.php[/url]

The code for same files is here:
[url]http://intercampusweb.com/ens/includes/code.txt[/url]

as you can see the error is just that this command not working:

<? readfile(“http://www.intercampusweb.com/interamigos/clasificados.php“) ?>

<? readfile(“http://www.intercampusweb.com/interamigos/includepic.php“) ?>

<?
readfile(“http://www.intercampusweb.com/interamigos/miembros.php“)
?>

Also in #PHP _↴