title: Exchange Managed API: Why is the event not fired when a item is deleted?
body: <p>I use pull subscriptions in exchange managed api to catch newly created, modified or deleted items.
  It works fine for created or modified appointments, but for some reason it doesn't work for deleted items. Here is how i created the subscription: </p>
  
  <pre><code>PullSubscription subscription = m_exchangeService.SubscribeToPullNotifications(
             new FolderId[] { WellKnownFolderName.Calendar },
              1440,
              null,
              EventType.Created, EventType.Modified, EventType.Deleted);
              subscriptions.Add(usermail, subscription);
  </code></pre>
  
  <p>Do I have to configure something in exchange to make it work? Does this maybe only work for hard deleted appointments, and not for appointments that moved to the deleted folder?</p>