I have a 2019 Exchange environment with one DAG containing two Mailbox Servers. One of the Mailbox Servers host the Active Database Copy. The other holds the passive database copy. Every 15 minutes the passive copy database goes into a HealthyDisconnect State and logs a MSExchRepl error 2153. I've restarted the Mailbox Server that holds the Passive copy - This did not resolve the issue. Test-ReplicationHealth comes up good (i.e. passes). Get-MailboxDatabaseCopy -connectionstatus comes up okay as well. Verified Firewalls are off too.
Does anyone know why the passive database copy goes into HealthyDisconnect state with MSExchRepl 2153 error?
Please advise.
Thank you,