restrictions on file_get_contents()

Hello! I have a script that uses file_get_contents() to pull off an .html page on two different remote servers. This was working perfectly before, but now file_get_contents() returns false when pulling off the page from one of the sites, but successfully returns the contents from the other site. But when I manually check if the page exists - it does. Reading through the PHP Manual, I couldn't find any hints if a remote site can explicitly deny the file_get_contents() request. Is this restriction possible? Any help please. Thanks in advance. -- Irvin http://netgarage.ne1.net