Hi,
These warnings may appear due to various issues when Backup Exec is
accessing the target mailbox for backup.
Sometimes, these warnings may also indicate corrupt mail messages or
attachments. Hence, we request you to check the mails that are frequently
causing these warnings and verify them. For more information on this,
please refer to the following technote.
http://seer.support.veritas.com/docs/231185.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.