I would like to suggest you can also try ZOOK Exchange Server Backup Software to take backup of emails from MS Exchange server and save them into 30+ different saving options. Allows to Import Exchange Server to Thunderbird, Zimbra, Windows Live Mail, Lotus Notes, Apple Mail, IMAP account. Facilitates User to Backup Exchange Server Emails to PST, MBOX, EML, MSG, PDF, XPS, HTML, EMLX, DOC, MHT, RTF, CSV, ZIP, etc. The tool enables user to export complete data items from Exchange Server such as emails, contacts, calendars, custom folders, etc. It enables unlimited bulk storage of Exchange server email backups. It works with both the most recent and older versions of Microsoft Exchange Server.