Ok, my problem was using the url exchange.mycompany.com/exchnage vs the correct URL exchange.mycompany.com. I still get the empty ok box when clicking the "push" button in the admin gui but the logs no longer show an error. Instead I see a xml message starting with
and containing 3 sections starting with
<D:propertyupdate xmlns:D="DAV:" xmlns:c="xml:" xmlns:b="http://schemas.microsoft.com/mapi/proptag/" xmlns:e="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/">
This seems to work correctly except that I'm not sure what should be happening. My zimbra calendar items are not in my exchange calendar. What is the result of getting this to work? Will my Zimbra Calendar items be Pushed to exchange?