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Okta AdminOkta Admin 

Are there work arounds for federating default o365 domains?

Hi, I recently federated an o365 vanity domain with okta to manage provisioning. In order to federate with Okta the domain cannot be listed as default. All users are provisioned properly from Okta with the desired vanity domain email and user name. The problem is that the tenant domain x.onmicrosoft email is default for groups and dls. Anyone experience this and or have a work around?
Emilian AldeaEmilian Aldea (Okta, Inc.)
Hello,
 Emilian here with Okta's Customer Support Team, thank you for reaching out to us.
 Regarding the federation of the Office365 domain, there's no possible way you may federate the default domain. What we recommend is that you create a separate domain for federating with Okta. I have attached below our Office365 deployment guide which should contain a much more detailed information about the process. Hope this helps!

URL: https://support.okta.com/help/Documentation/Knowledge_Article/Office365-Deployment-Guide

Thank You & Regards,

Emilian Aldea
Technical Support Engineer
Okta Global Customer Care
Okta AdminOkta Admin
The catch is we need to federate our main domain (blah.com) in order to provision users that will end up having usernames and email addresses that match blah.com. So far most of this is working but the problem is if someone creates an office 365 group for example the email address will show up as nameofgroup@blah.onmicrosoft.com and I'd rather have everything consistent as it pertains to email addresses