I have a customer I am trying to migrate off of SBS 2008. They are using the Exchange Server. I did a cutover migration to Office 365 that went about as well as it possible could but am having fits redirecting their Outlook clients to Office 365. I can manually configure Outlook to point to Office 365 but every time I reboot the workstation Outlook winds up pointing right back to their Exchange Server. I cannot keep it pointed at Office 365. The autodiscover keeps changing things back to their Exchange Server. Any idea how to point Outlook to Office 365 and make it last?
BTW their Outlook is a mix of 2010 and 2013