GP 2013 and email Setup

I have GP 2013 on a Windows 2008 R2 server with Office 2010. When I go to Tools->Setup->Company->eMail settings and click on either Sales or Purchasing I am immediately greeted with the message "Please run Outlook and set it as the default mail client". Now I have gone into IE and set Outlook as the default email client. What else do I have to do to get this to work? Is Outlook 2010 compatible with GP 2013? Under System Prefetrnces I told it to use a MAPI client and not Exchange.