Using Exchange Connector with Exchange Online / o365.

You can locate the EWS URL with the Test E-Mail Autoconfiguration in Outlook. To do it,

--Start Outlook client.

--Hold down the CTRL key, right-click the Outlook icon in the notification area, and then click Test E-mail AutoConfiguration.

--Verify that the correct email address is in the E-mail Address box.

--Click to clear the Use Guessmart check box and the Secure Guessmart Authentication check box.

--On the Test E-mail AutoConfiguration page, click to select the Use AutoDiscover check.

--From the Results tab locate the Availability Service URL.


From there you will configure impersonation.  Use the following