Large OST File Recovery - Version 3.6 Get Large OST File Recovery to reduce the oversize OST files in situations of Exchange Server failure, Server downtime OST file does not synchronized with Exchange Server and E-mails becomes store in server database and exist in E-mail client, but have no idea about it, if you are using Outlook for E-mailing and your E-mails goes to Exchange Server and server becomes down then you can use OST Recovery software to get back E-mails from Exchange Server and recover other e-mail, which send by any E-mail sender. OST to PST Tool have best option to acquire your on you MS Outlook. OST File to Outlook provides establish end-to-end solution and also convert each and every component of your OST file like e-mail, contacts, calendar, tasks, journal etc. OST to PST Tool productively support all the windows versions like Windows Vista, 2003, XP, 2000, ME, XP, NT, 2010, 2007, and 98 as well as run on Exchange server 5.0, 5.5, 2000, 2007, 20003, and 2010.