I Have a on premise SharePoint 2013 server and office 365 host my exchange for me. There is feature in SharePoint which allows to synchronize the task to outlook. I have read many technet articles which helps in achieving the same when both the servers are on premise, I have configured all the perquisites on SharePoint server however there is no help available anywhere about how to configure the trust settings at Exchange Online server so that the 'Sync to Outlook' feature will work.
Basically On premise SharePoint 2013 and Exchange Online is my Environment and I want to use Sync to outlook feature in SharePoint.