Forum Discussion
Hybrid Autodiscover Fails,RedirectAddr (same value as RemoteRoutingAddress) Must Be Same as O365 UPN
Thank you for taking the time to read this. I've been banging my head on why this must be or I've got something wrong with my hybrid configuration. I have a Full Hybrid environment setup between on-p...
The record shall be the remote routing address not the default smtp cause I think you mean primary smtp is used only for sending emails so I think this is not the cause of your issue
I never confirmed this to be the issue, but I believe it was the users' local Active Directory UPN suffix (win.DOMAIN.com) was not a part of the Office 365 tenant's domain configuration. I suggest updating their local Active Directory UPN to match their default SMTP address (Email address removed) and running an AD Sync. The reason I never confirmed this is because I changed the autodiscover record to point to Office 365 so I avoided the issue but in a subsequent migration for another client, I changed the users' local Active Directory UPN to match their default SMTP address and it worked flawlessly. I hope this information helps someone.