The POST HTTP protocol used to access the path '/rpc.php' is not allowed

Question

Possible duplicate:
How to resolve the error [HTTP POST HTTP address used to access the path is not allowed] when implementing the Speller page in a .net application

We use Tiny MCE to edit the text of content in ASP.NET MVC4.

I want to use spell check. To do this, I must specify the php file. when I specify the path of this fie in my local host, it returns an error that "the HTTP POST HTTP address used to access the path" /rpc.php "is not allowed . "

Do I have to specify any permissions to access the php file from asp.net mvc.

Is there any other way to solve this problem.