best way to manually remove Exchange 2010 from an organization

Go to Primary Domain Controller

2. Open ADSIEDIT

3. Right Click on ADSIEdit and Click Connect to

4. Connect to “Default Naming Context”

5. Navigate to the following objects and Delete them.
DC=Domain,DC=Com -> OU=Microsoft Exchange Security Groups

DC=Domain,DC=Com -> CN=Microsoft Exchange System Objects

6. Right Click on ADSIEdit and Click Connect to

7. Connect to “Configuration”

8. Navigate to the following objects and Delete them.

CN=Configuration,DC=Domain,DC=Com -> CN=Services -> CN=Microsoft Exchange

CN=Configuration,DC=Domain,DC=Com -> CN=Services -> CN=Microsoft Exchange Autodiscover

9. Force the Active directory Replication.

10. Exchange 2010 Manual Uninstallation is Completed