Display and interact with Exchange 2010 resource calendar from within SharePoint 2013

Hello-

Currently environment:

Exchange Server 2010 Standard SP3

SharePoint 2013 Standard SP1

I have what should be a relatively simple task - I am looking to display and manipulate several resource mailbox calendars in SharePoint 2013.  In my test, I did the following:

1.  Created a new list of type Calendar in SharePoint.

2.  Selected Calendar Overlay from the Ribbon.  Added a new calendar, typed in name, and selected type Exchange.  For Web URL, I typed in my organization's OWA URL, i.e. https://mail.myorg.org/owa, and Exchange Web Service URL, i.e. https://mail.myorg.org/ews/exchange.asmx.  I then clicked OK.

3.  The SP calendar then displays, but I receive the error message "E-mail address is empty.  You should set Exchange e-mail address into your user profile to retrieve calendar data from Exchange server."

The Sharepoint 2013 server and Exchange 2010 servers are on the same domain (only one in the forest).  Also, I am currently logged into Windows using a dedicated sp_admin (SharePoint Admin) account.

Thanks