I needed to repair some corrupt Monitoring HealthMailboxes. I've followed the instructions from numerous articles indicating I should stop the Microsoft Exchange Health Manager (and Recovery) services, disable the monitoring mailboxes, delete the HealthMailbox users from AD (within ADUC "Microsoft Exchange System Objects\Monitoring Mailboxes"), await an AD sync, then restart the services and the MS Exchange Health Manager will recreate the mailboxes.
i.e. How to fix damaged or corrupt Health Mailbox on Exchange 2016
Exchange 2013/2016 Monitoring Mailboxes
My issue is that Exchange 2016 will not recreate the HealthMailboxes. HealthMailbox users are not created in AD "Microsoft Exchange System Objects\Monitoring Mailboxes" and "Get-Mailbox -Monitoring" returns no results.
Thank you.