******@abc.com I found more than more than 48000 this Health Mailbox user.

Question

******@abc.com I found more than more than 48000 this Health Mailbox user.

But in actual I have less than 3000 user. We are using Exchange 2019. how I Clean them without any impact

Answer 1

Hello, @Nihal Ansari,

Welcome to the Microsoft Q&A platform!

To clean up these health mailboxes without impacting your environment, you can follow these steps:

1.Stop the Exchange Health Manager Service:

• On each Exchange server, stop the Exchange Health Manager Service. This will prevent new health mailboxes from being created during the cleanup process.

2.Delete the Health Mailboxes:

• Open Active Directory Users and Computers (ADUC).
• Go to the View menu and ensure that Advanced Features is selected.
• Navigate to Microsoft Exchange System Objects and then to the Monitoring Mailboxes folder.
• Highlight all the health mailboxes in the right pane and delete them.

Alternatively, you can use PowerShell to delete the health mailboxes:

Get-Mailbox -Monitoring | Remove-Mailbox

Make sure you also read this and give the necessary permissions so the AD objects are removed: https://learn.microsoft.com/en-us/exchange/troubleshoot/administration/remove-mailboxdatabase-cannot-remove-health-mailboxes

Otherwise, remove the AD objects manually.Then restart the Microsoft Exchange Health Manager, MSExchangeHM service on each 2019 server to recreate them.

3.Restart the Exchange Health Manager Service:

• After deleting the health mailboxes, restart the Exchange Health Manager Service on each Exchange server. This will recreate the necessary health mailboxes automatically.

4.Verify the Health Mailboxes:

• Ensure that the health mailboxes have been recreated and are in a healthy state. You can use the following PowerShell command to check:

Get-Mailbox -Monitoring

For more detailed guidance, please refer to Check Exchange health mailboxes - ALI TAJRAN.

(Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)

Should you need more help on this, you can feel free to post back. 

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Thank you for your support and understanding.

Best Wishes,

Alex Zhang