title: Exchange calendar integration with application server external to exchange server
body: <p>I have a requirement to integrate an application with MS Exchange in order to retrieve calendar information.</p>
  
  <p>My company host the application server and would need to contact the client's Exchange server via the public internet (communication would therefore need to be encrypted and authenticated).</p>
  
  <p>The application is a .Net web application.</p>
  
  <p>Does anybody have any resources or ideas on the best way to architect this?</p>