Exchange 2016

After migrating mailboxes to exchange 2019 from exchange 2016 . Most of the mailboxes went to quarantine all of a sudden and databases went to dismount state and came back to mount state. We couldn’t bring the databases to a stable state. We realized its a bug in exchange 2019. …

Simulating backup in a Exchange Server to Clear Logs happens sometimes when the backup stops working and the disk is about to get full. This is the only easy way to clear backups without backing up the exchange server using native disk shadow. Its a way to tell exchange server …

Solution – Make sure all Domain Controllers are reachable. Remove any orphaned domain controllers. Try running on domain controller itself holding the schema master.  

Hybrid Modern Authentication (HMA) for Exchange On-Premises is being there for while which has a amazing set of features to integrate your endpoint logins to terminate in Azure AD directly. Azure AD will give a clear indication on the health of your identity and a clear visibility giving you access …

Solution –  Make sure Outlook Anywhere succeeds with test account. Make sure you enter the credentials with domain\username in all locations while creating endpoint. Make sure internal and External host name is in the certificate (In a strange case user ad multi domain wild card cert were we move internal …

A special Rpc error occurs on server EXCH1: These certificates are tagged with following Send Connectors : Outbound to Office 365. Removing and replacing certificates from Send Connector would break the mail flow. If you still want to proceed then replace or remove these certificates from Send Connector and then …