title: cross domain XMLHttprequest
body: <p>Here is my situation:</p>
  
  <p>I have a Webserver machine, Client machine, and a third machine running some program that listens for XMLHttpRequests.</p>
  
  <p>Client accesses the Webserver from the Client machine, makes some changes, and then clicks on'Save'. At this point, data is being sent back to the Webserver and to the Third machine. All of this is being done using Javascript and XMLHttpRequest object.</p>
  
  <p>The post to the Webserver works fine, however post to the Third machine does not work, since it had a different IP/domain. </p>
  
  <p>How can I make this work? 
  Client machine -> Third machine does not work, because its on a different domain
  Webserver machine -> Third machine does not work, because of firewall issues</p>
  
  <p>Any ideas are greatly appreciated!</p>