We are using this PHP test code to setup a connection to an Emailing system API server (the API link is [url removed, login to view]) (see the attached file for the code)
The code is working fine under the development server (check here [url removed, login to view]). We have upload same test code to our production server where this code is needed (check here [url removed, login to view]) but this is not working on this server.
Since the test code is working with one server (a Godaddy server) but not working on our production server (it is an OVH server based on CentOS 5.3) It seems there is an issue with our production server firewall configuration not letting us to establish the connection towards the API server ([url removed, login to view]).
We need a server/system administrator with good experience with server based on CentOS 5.3 to investigate the matter and fix it. The target is to fix the issue and make the PHP test script work and that is the condition of the project success.