Mailbox crash

[amangb]

We had two zimbra servers working in our organisation, and one of them failed. We had the ldap info on one of the servers and resynced it back to the failed server by reinstalling zimbra and making it an ldap replica. The problem now is whenever users on the failed server open their mails, they have empty mailbox. We have the old one on a separate nas server so the mailboxes are intact. is there a way to match the users back to their old mailbox? It's been days and still no solution, a hint would be much appreciated. I'm running Zimbra 5 open source edition on Fedora 7 32-bit.