For the support of Exchange 2007 remote Folder Level Backup with BackupAgent the following system requirements are needed:
Due to significant architectural difference between Exchange 2003 and Exchange 2007, there is no direct support for the Exchange 2007 folder level backup implemented in the Client in this release. However it is now possible to perform the Exchange 2007 folder level backup from a remote computer, if Exchange 2007 is installed onto a Windows 2003 Server 64 bit system or a Windows 2008 system.