Forum Discussion
Domain name change
Hi, We have changed our domain name with our web host and now require our MS 365 subscription to reflect the new domain name in the email addresses. Currently the domain we use with MS 365 is rather...
That's up to you. Generally speaking, all you need to do is verify the domain within M365, then assign it to user's UserPrincipalName and EmailAddresses attributes. You can leave the old @yyyyyy.biz address as secondary alias, in order to avoid issues with replies to older messages.