Caixas de correio desabilitadas não são exibidas na exibição principal. Para reconectar uma caixa de correio desativada:
In the EAC, navigate to Recipients > Mailboxes.
Click More, and then click Connect a mailbox.
A list of mailboxes that are disconnected on the selected Exchange server in your Exchange organization will be displayed.
Note: This list of disconnected mailboxes includes disabled mailboxes, deleted mailboxes, and soft-deleted mailboxes.
Click the disabled mailbox that you want to reconnect, and then click Connect.
In the window that asks if you’re sure that you want to reconnect the mailbox, click Yes.
Exchange will reconnect the disabled mailbox to the corresponding user account.
Se você não conseguir ver a caixa de correio ao tentar se reconectar, execute o seguinte no Shell de Gerenciamento do Exchange.
Get-MailboxStatistics -Database "DB NAME" | ForEach { Update-StoreMailboxState -Database $_.Database -Identity $_.MailboxGuid -Confirm:$false }