使用Jquery，CORS和Apache进行跨域请求

I want to make a cross domain request between two servers/domains that I own.

So far: In server1/domain1 I have Apache running and I enabled mod_headers, added "Header add Access-Control-Allow-Origin "myotherdomain.com", and restarted apache.

In server2/domain2 I have a node.js webapp running and I do the following ajax request:

$.ajax({
    url: "domain1.com/myproject/test.php",
    type: "POST",
    data: {test: "test"},
    success: function() {
        alert("success");
    },
    error: function() {
    alert("error");
}

The test.php file simply echos the post variable test that is passed in the ajax.

What do I need to do in order to make this ajax return a "success"?