I will have to ask our Chief Admin as I'm sure this must have something to do with Apache Security Settings and/or Firewall. When I researched the issue (seems to be a universal issue and not limited to our server) in some cases it even has something to do with how the Data Center set up the server. Contabo (our Datacenter) has some strict security settings. But who knows, we have a brilliant Chief Admin and if he can spare the time to check out the issue he may find a very simple way to solve the problem.