Microsoft Exchange can be useful for businesses having own networks. But with rising hacker attacks, issues can happen. Mailboxes on email system can become unreachable but one can recover for a lost mailbox.

How to Recover a Mailbox in Exchange
· Run "Exchange System Manager" on server user interface PC. The system manager will be placed inside "Exchange Server" files.
· Run "Administrative Group" file so that one can see company's administrative group connection on server user interface.
· Select "Server", then select on name of server.
· Open storage group. See all mailbox connections inside the server's network.
· Run "Mailbox Store" and right-click on "Mailboxes" tab.
· Click "Run Cleanup Agent." Click mailbox aimed to restore and right click on it.
· Click "Reconnect" and hit "OK."