While this is possible, we have found that once you have moved the smtp address to the newly created mailbox, any user who had the smtp address cached in their outlook profile will receive a NDR, and would require to delete the auto-completed address
before being able to send mail to it.
Is there any specific attributes that can be copied/migrated across to prevent this disruption?
We have an urgent requirement to change the distribution group to a user mailbox that is frequently used company wide and would be very keen to ensure the transition is seamless from an end-user perspective.
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