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Recreating Exchange 2013 Health mailboxes

In Exchange 2013 a new feature called “Managed Availability“, a built-in monitoring system is available.

This performs various tests continuously like, end user actions, Server components related issues etc. & when these tests fails, it automatically performs a simple recovery to resolve the issues related to the specific components. This action requires a special type of mailbox called “Health Mailbox”. Health Mailbox is a type of mailbox that is used for monitoring the Server by itself. It is just like a normal mailbox with an Active Directory Account. The Microsoft Exchange Health Service is the one which is responsible for creating & maintaining the Health Mailboxes. The Microsoft Exchange health Manager Service runs in two Processes: MSExchangeHMHost.exe and MSExchangeHMWorker.exe. This MsExchangeHMWorker.exe process checks for the availability of the Health mailboxes and creates the health mailboxes are required.

How to Recreate the Exchange Health Mailbox?

Step 1: Run Get-Mailbox -Monitoring (This command will list all the Health Mailboxes that are available in the organization) There will be two health Mailboxes created for every Mailbox database (One for Mailbox & other for Public Folder).

Step 2: Go to the ADUC. Navigate to ADDomain.Local/Microsoft Exchange System Objects/Monitoring Mailboxes. We can see all the Health Mailboxes listed. Select all of them & delete it.

Step 3: Next we have to restart the Exchange Health Manager Service or the Exchange Server itself. This process will recreate the health mailboxes.

Step 4: Now we can run the same command again Get-Mailbox -Monitoring to make sure all the Health Mailboxes a listed with the new names.

Points to Note:

=> If you have multiple Mailbox Servers, simply restart the Exchange Health Manager Service on all the servers to get the health Mailboxes recreated back.

=> In CU2 & higher version running setup /p re-creates the Health Mailboxes, if it does not get re-created by restarting the Exchange health Manager Service or Server.

=> It’s advisable to exclude the Health Mailboxes from user account lock out policies.

=> Don’t make any changes to the Health Mailbox like moving it to a different container, change AD permission inheritance or any other changes in the properties of the Health Mailboxes.

=> Don’t move the Health Mailbox from one database to another.

=> You can also run the following command to delete the health mailboxes:

Get-Mailbox -Monitoring | Remove-Mailbox (to remove all health Mailboxes)

To remove a single Health Mailbox with its Name (guid)

Get-Mailbox “HealthMailboxec3ed6f8756d4f09ab23da7bfe99f076” -Monitoring | remove-mailbox

Ratish Nair

Microsoft MVP | Exchange Server

Team @MSExchangeGuru

2 Responses to “Recreating Exchange 2013 Health mailboxes”

  1. Andreas Says:

    What can i do if they dont be recreate…??

  2. Prabhat Nigam Says:

    It will recreate with the service restart.

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