Exchange 2016 – QuorumGroup in failed state (Test-ReplicationHealth)
I have 2 x Exchange 2016 servers (running on Windows Server 2016) with a single DAG containing 2 databases. I also have a File Share Witness configured on a 3rd server running Windows Server 2016. This has been working perfectly…
Enable RecipientValidation in Exchange Organisation
I have been troubleshooting an issue where mail was reaching our Exchange servers for non-existent recipients (it passes through a Sophos UTM first). I discovered that there is a way of having Exchange validate the recipient and this is done…
User can’t access on-prem mailbox after migration to Exchange Online
After migrating a user mailbox to Exchange Online (from Exchange 2016) the user could no longer access some shared mailboxes that are still hosted on-premise in Exchange 2016 (permissions are fine, they could access them prior to being migrated). When…
User can’t access mailbox after migration to Exchange Online
After migrating a user mailbox to Exchange Online (from Exchange 2016) the user could no longer access their mailbox in Outlook, it gave no error just behaved as if it was offline. I tried removing the profile and creating it…
Users have two mailboxes, one online and one on-premise
While working with an Exchange hybrid environment (Exchange 2016 on-premise and Exchange Online) it became apparent that some users had two mailboxes; one on-premise and one in Exchange Online. Their primary mailbox was in the on-premise environment, the one online…
You can’t use the domain because it’s not an accepted domain for your organization
While trying to migrate a mailbox from Exchange 2016 on-premise to Exchange Online using the New-MoveRequest cmdlet it failed and returned this message: You can’t use the domain because it’s not an accepted domain for your organization While checking the…
Exchange 2016 – using maintenance mode for patching a DAG member
When patching an Exchange 2016 server that is a member of a DAG (Database Availability Group) it is best to put the server into maintenance mode before doing so. This is easily done using a few PowerShell cmdlets: Drain the…
Ignore requests for read receipts on a specific mailbox
Our ServiceDesk application collects mail from a single mailbox in our Exchange 2016 on-premise environment (servicedesk@ourdomain.com). Mail is also sent to several other mailboxes and forwarded on to the ServiceDesk mailbox (mainly for different languages). A number of users have…
Exchange 2016 – Remove a mailbox server from a DAG using PowerShell
I am working on an Exchange 2016 environment in a lab (using a SureBackup job in Veeam Backup & Replication) and not all of the servers are present in the lab. Therefore, I need to remove one of the mailbox…
Exchange 2016 – mount a mailbox database using PowerShell
Mounting a mailbox database in PowerShell is really easy, you just need to use the Mount-Database cmdlet. Here is an example: Mount-Database -Identity “UK Mailbox Database 1”