I hope you get a fix for your issue, and I would like to take the opportunity to ask for help on an issue along similar lines.
I would like to exclude my journal mailbox using exclusion lists but it seems to ignore the exclusion and continue to backup the journal mailbox. I would like to exclude the entire mailbox. What am I doing wrong?
Microsoft Exchange Mailboxes:\Journal\*
**** EDIT ****
Moved this post to new discussion from https://www-secure.symantec.com/connect/forums/exchange-backup-policy as this query is not related to that thread....
Marianne van den Berg