file_get_contents problem

[eluser]Guntars[/eluser]
Hi, all
I have a problem with file get contents
I have wordpress blog on other server, and just want to import rss using

Code:

file_get_contents()

Code works perfect, but only when is different domain as server. Now the blog change for better looking, with sub-domain to same as the server name, and script stops work, shows error 404. Actually, not works with curl etc as well.

I know that's the security issue, but where in php.ini or in hosting settings. Does anyone see something like this before?

Thanks for Help