Hello,
What are you backing up on the remote Exchange server? Refer to the following technotes which provide steps and gudelines in order to resolve the problem:
Title: How to troubleshoot the error "A failure occurred querying the Writer status" (a000fed1 HEX or e000fed1 HEX) using VSSADMIN
http://support.veritas.com/docs/261993
Title: The backup of shadow copy components fails with the error "0xe000fed1 - A failure occurred querying the Writer status."
http://support.veritas.com/docs/274993
In case the above solution does not help, do write back to the forum with details.
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
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.
Regards.