We have two domains within the company, one public domain lets say ABC.com and one internal domain with Active Directory lets say ABCInternal.com. Our
users log on to ABCInternal.com with AD credentials. We are trying to move to Office 365 and want to use Single Sign on functionality and want to make sure that users can use the ABCInternal.com credentials to get into Office 365.
We only want to use SharePoint in Office 365 for now but in future may use Exchange and Lync.
We have set up an ADFS farm internally and also set up ADFS proxy server in our DMZ in order to do Single Sign on.
Now when we do the configuration steps in Office 365, do we add ABC.com domain to Office 365 and then add the UPNs for ABC.com to the user accounts of ABCInternal.com to do the federation.
Are we missing any steps here.
I am just not sure if this is the right configuration because all the guidance on the Microsoft sites assumes one domain for single sign on and we have two domains here, one public and one internal.
Can someone point to any guidance for organizations who have both public and internal domain for Office 365 Single Sign on.
Thanks for your help.
Single Sign On with Office 365
