Forum Discussion
Authentication in Hybrid Enviroment to Outlook, Teams
Hi all, We have hybrid enviroment. Local AD sync to AAD with AAD Connect. Autentication using Pass-through Authentication and SSO. Exchane Online configured with HMC in Modern Authentication. A...
Look into enabling Alternate ID: https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-authentication-use-email-signin
VasilMichev I'm not sure if this solution will helpful with non routable domain in local AD in UPN
