Forum Discussion
Question regarding UPN and AD pass through
Hello and pardon the question if I missed the answer elsewhere. We are finally migrating off on prem to O365. I would like to use pass through authentication but have questions about the UPN, pub...
Not sure if I follow you here...the UPN used to login in Office 365 should be based on a public domain and normally what you do is sync this UPN from your local AD to Office 365 in one of the account atributes (Mail one)
Juan Carlos,
In an example I saw, the scenario was the organization had domain.com as their public domain and domain.local as their private AD domain. Obviously you cannot use a dot local domain outside your private AD environment. We on the other hand use public.com for email and private.com from AD and we own both domains. So my thought was that since I own it couldn't I just use private.com for O365 login? That is to say my users could still log in as user@private.com (on premises UPN) instead of user@public.com (Alternate ID) and only use the @public.com domain name for their email account e.g. person@public.com