Reconnect a disconnected mailbox in Exchange 2010

This simple guide shows you how to connect a disconnected mailbox to an AD user:

• Open up the Exchange Management Console.
• Expand Recipient Configuration and then click on Disconnected Mailbox
• Click on the user on the right you want to enable the mailbox for.

• Right click on the mailbox and click on Connect.

• Step 1 -> Select User Mailbox.
• Step 2 -> Click Next.

• Step 1 -> Select Existing User.
• Step 2 -> Click the Browse button.

• Type in the name of the user in the search bar, once found, select it and then click the OK button.

• The user will now show in the text box as shown above.
• Step 1 -> Enter in the alias
• Step 2 -> Click Next.

• Review the summary page and then click Connect.
• Once its complete you can click Finish.

Hope it helps.