When attempting mail level recovery from an Exchange Server within a disk image backup, the operation fails. This problem arises when the BDR client is not located in the same domain as the Exchange Server.
Mail level recovery fails when the BDRShield Backup Client is not within the same domain as the Exchange Server.
To resolve this issue, ensure that the BDRShield Backup Client, which is responsible for the mail level recovery, is within the same domain as the Exchange Server.