In Microsoft Exchange Server 2019 or Exchange Server 2016, when the journaling mailboxbecomes available again, you try to use the Resend this message feature in Outlook on the NDRs in the alternate journaling mailbox to send the unaltered delivery reports to the journaling mailbox. However, it fails, and you receive the following error message:
Remote server returned 550 5.71 sender is not authorized to submit general reports.
To fix this issue, install one of the following updates:
Learn about the terminology that Microsoft uses to describe software updates.