Remove Exchange 2013 from out domain

We moved to Exchange 365 about 1 year ago and now I would like to reuse the old server so I need to remove Exchange 2013 from our domain.

I doubt it as easy as removing from the control panel

Could someone give me some pointers and this guide on the web - is this a good place to start?

Please follow below steps to uninstall Exchange server:
 1. Disable mailbox:
Get-User | Disable-Mailbox
Get-Mailbox -Arbitration | Disable-Mailbox -Arbitration -DisableLastArbitrationMailboxAllowed
Get-Mailbox -Monitoring | Disable-Mailbox

2. Remove restore mailbox for disconnected or soft-deleted mailbox:
Get-Mailbox | Get-MailboxStatistics | Where {$_.DisconnectReason -eq “Disabled” } | |foreach {Remove-StoreMailbox -Database $_.database -Identity $_.mailboxguid -MailboxState Disabled}
Get-Mailbox | Get-MailboxStatistics | where {$_.DisconnectReason -eq “SoftDeleted”} |foreach {Remove-StoreMailbox -Database $_.database -Identity $_.mailboxguid -MailboxState SoftDeleted}

3. Remove database:
Get-MailboxDatabase | Remove-MailboxDatabase

4. Remove partner application configuration:
Get-PartnerApplication| Remove-PartnerApplication

5. Verify nothing is left:
 Get-Mailbox
 Get-Mailbox -Arbitration
 Get-Mailbox -Monitoring

At this point reboot the server and verify that IIS and other roles are working correctly.
 Finally, you can uninstall Exchange 2013 from Add/Remove Programs or PowerShell with below command:
Setup /Mode:Uninstall /iacceptexchangeserverlicenseterms
Ian PriceIT ManagerAsked:
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MaheshArchitectCommented:
The sequence you written is seems OK
The major thing is to remove all mailboxes, after that exchange will not stop you from uninstalling it.

BTW. You may remove / reuse old exchange server without uninstalling and then remove it from adsiedit.msc (from ad configuration partition) but that path should be used when you are failing to uninstall exchange server
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Ian PriceIT ManagerAuthor Commented:
Thank You
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