Cann't browse Contents of Exchange Mailboxes

Hi,

I have Netbackup 7.1 as Master Server on Linux server ( Redhat 5.2 64bits) and i create policy for backupping Exchange 2007 on Windows 2003 R2 64bits (SP2), the backup of "Microsoft Information Store:\" work fine, but the backup of "Microsoft  Exchange Mailboxes:\" could not working and returned this error:

Warning bpbrm (pid=29585) from client adserver.imist.ma: WRN - unable to successfully enumerate folder: Microsoft Exchange Mailboxes:\
20 sept. 2011 01:38:02 - Error bptm (pid=29587) media manager terminated during mount of media id 0001L3, possible media mount timeout
20 sept. 2011 01:38:02 - Error bptm (pid=29593) system call failed - Connexion ré-initialisée par le correspondant (at child.c.1295)
20 sept. 2011 01:38:02 - Error bptm (pid=29593) unable to perform read from client socket, connection may have been broken
20 sept. 2011 01:38:02 - Error bptm (pid=29587) media manager terminated by parent process
20 sept. 2011 01:38:02 - Error bpbrm (pid=29585) could not send server status message
20 sept. 2011 01:38:02 - Info bpbkar (pid=1716) done. status: 71: none of the files in the file list exist
20 sept. 2011 01:38:02 - end writing

 

In Netbackup client 7.1, i can't browse the contents of Microsoft Exchnage Mailboxes. how can have logs in Netbackup Client (turned on windows 2003 Server)

 

Any idea please.

 

Regards.