Hello Orin,
Make sure that the Service Account has Domain Administrator Rights.
Would you check the status of the Volume Shadow Copy Service ? Try setting it to manual and run the backups.
Also the Exchange Writer is disabled on an SBS by default.
On Windows Small Business Server 2003, the Microsoft Exchange Server 2003 Volume Shadow Copy Service (VSS) Writer is disabled, which will cause snapshot backups for Exchange 2003 to fail.
To successfully perform an Exchange 2003 snapshot backup, review the following :
Microsoft Knowledge Base article:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q838183 .
NOTE : If we do not receive your reply within two business days, this post would be marked ‘assumed answered’ and would be moved to ‘answered questions’ pool.
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