Office.com Office 365 Creating Shared Mailboxes by the Same Name under Different Domains

by Yang Yang on May 17, 2019

When you have multiple domains under the same Office 365 admin account, e.g. domain1.com, domain2.com, etc., you can’t directly create these emails:

  • support@domain1.com
  • support@domain2.com

Which would give this error when you try to create emails by the same name already used by another domain:

Now you can have a little circumvention to get around this by first creating the email with a unique local name and then creating an email alias to use the name you want.

Do as the following:

Done!

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