Exchange 2010 – New Mailbox for existing user

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To allocate a new mailbox to an existing user which does not already have a mailbox:

Exchange Management Console Steps:

  1. Open the Exchange Management Console (EMC)
  2. Expand ‘Recipient Configuration’ and select ‘Mailbox’
  3. From the actions pane select ‘New Mailbox’
  4. Select ‘User mailbox’ then click the ‘Next’ button
  5. Select ‘Existing users’ and then click the ‘Add’ button
  6. Select the user then click ‘OK’
  7. Click on ‘Next’ , ‘Next’, then ‘New’
  8. The user account is now ‘mail enabled’ and has a mailbox.

Exchange Management Shell Command:

This task can also be done from the Exchange Management Shell command line.

Assuming the user is ‘bbuilder’ the command is:

Enable-Mailbox -Identity 'itsupportguides.com/CitySite/Users/Bob Builder' -Alias 'bbuilder'