per this doc:
http://seer.entsupport.symantec.com/docs/290092.htm
Details:
Overview: Exchange Information Store backups fail with a NetBackup Status Code 1 (the requested operation was partially successful) and the error "ERR - failure reading file: Microsoft Information Store:\First Storage Group\Mailbox Store (ME6AWMAIL04) (BEDS 0xFFFFFEA9: 0xa000fea9 (2684419753)" in the bpbkar log file.
Log files:
The bpbkar log file shows the following error message:
ERR - failure reading file: Microsoft Information Store:\First Storage Group\Mailbox Store (ME6AWMAIL04) (BEDS 0xFFFFFEA9: 0xa000fea9 (2684419753)
Resolution:
In previous instances, this issue is related to problems with the Exchange mailbox store. Symantec recommends contacting Microsoft for assistance running consistency checks on the Exchange database, to confirm the health of the Exchange server.
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Exchange Logs are database transactions that normally get truncated upon successful backup
Netbackup job logs can be viewed in Activity Monitor, Detailed Status or Reports, All Log Entries
Why it's saying Backup Exec is odd -- looks like Symantec reused some message code