Hello,
Are you backing up the Exchange mailboxes also from under the "Shadow copy components"? If yes then in order to resolve the error you need to select either from the normal selections or from" Shadow copy components". Do not selcet it from both.
Check if you are getting event ids 7034 or 1000
Also refer to the following technote:
http://support.veritas.com/docs/258159
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Additional Information :
For information on the recent VERITAS Backup Exec security vulnerabilities, including links to the downloads for the necessary hotfixes, please refer to the following document:
Patch summary for Security Advisories VX05-001, VX05-002, VX05-003, VX05-005, VX05-006, VX05-007
http://seer.support.veritas.com/docs/277429.htm
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