I want to switch from an email/name syntax like:

JDenver@domain.de to John.Denver@domain.com

I also need to make sure that people are able to reach them with their old email adress/name.

Is there some kind of build policy based on the domain controller?

Up-to-date Windows server versions here. We are unfortunately using romain profiles. Owa is used as well (Exchange 365).


Exchange 365, did you mean Office 365/Exchange Online? For cloud-only Office 365 organizations, bulk email address changes can be made when adding a new domain to your tenant, or at any time you can bulk add SMTP addresses to multiple mailboxes using PowerShell.

  • No. And no we want to stay with our current domain. – user1144409 Mar 27 '20 at 12:08

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