Replace Original Office 365 Domain Name

Replace Original Office 365 Domain Name
 
The organization is changing names and default internet domain name.  Please help me with the impact if we allow the current public domain name to lapse or remove it from our Office 365 tenant organization.  The owner’s don’t want to keep it
They would like everyone to connect to Office 365 using their new e-mail addresses
We have  145 users over 10 locations.
We do not currently use AD Sync.


Thanks,
  Troy Taylor
tset63vCIOAsked:
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timgreen7077Exchange EngineerCommented:
Unfortunately you can't replace your current tenant with a new one. The easiest thing to do would be to add the new domain to your current tenant and add the new email addresses as the reply address on the users current mailboxes. You will still have the current domain but you can send and receive emails via the new domain.

If you decide to get rid of the current tenant in lieu of the getting the new domain setup as the tenant, you can't carry over those mailboxes, so you will need to export all those mailboxes to a pst and them import them into the new mailboxes for those user in the new tenant.

Basically if you decide to get rid of your current domain as the tenant you will have to start from scratch on setting up the new one.
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tset63vCIOAuthor Commented:
Thank you for the prompt response.   If I understand this correctly we'll need to maintain the original domain and users login format, right?  I do understand that users will be able to set the new domain address as their default for sending.

Thanks,
  Troy
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timgreen7077Exchange EngineerCommented:
Mostly correct, if you keep the current tenant, and setup the new domain with the current tenant, you can actually change the default domain to the new domain name, and you can also change the user login to the new domain. As long as you keep this current tenant you can make those changes with no issues.
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tset63vCIOAuthor Commented:
Ok.  Thanks for the clarification.

TT
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timgreen7077Exchange EngineerCommented:
sure thing.
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