I'm having issues with Calendar Overlays and Exchange. I try to add an overlay to an already existing calendar (containing Tasks).
For the Outlook web access url the value is: https://mywebsite/owa
for the Exchange Web Service URL it is: http://mywebsite/ews/exchange.asmx
When I try to view the calendar I get the following error:
Could not establish trust relationship for the SSL/TLS secure channel with authority 'mywebsite'. (3c7bda6a-4344-47e1-aa35-7210d7df36e4)
After some poking around I found some information about the Root Certificate, so I downloaded that and added it to the Managed Trust in Central Admin.
The Error above still shows up, and I get the following error in my Event Viewer:
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