2.15. Switching Exchange from Mixed Mode to Native Mode
Problem
You have gotten rid of all of your Exchange 5.5 servers, and all legacy connectors and components have been removed from your Exchange organization. You want to switch to native mode to take advantage of the additional features offered, such as a pure SMTP routing environment and the ability to move servers between AGs.
Solution
Using a graphical user interface
Launch the Exchange System Manager (Exchange System Manager.msc).
In the left pane, right-click the organization object, and select Properties.
On the General tab, click the Change Operation Mode button. Note that this change, once completed, cannot be reversed. Click Yes in the notification box to confirm you want to make the change.
Using a graphical user interface (alternative)
Open ADSI Edit (adsiedit.msc) from the Windows Support Tools.
Expand the configuration container. Drill down to the appropriate
CN=Configur-ation, DC=<domain>,DC=<tld>container for your Exchange organization.Expand the
CN=Servicescontainer and select theCN=<domain>object that matches your domain. Right-click it and select Properties.On the Attributes tab, in the Select a property to view drop-down list, select msExchMixedMode. In the Attribute Values area, in the Edit Attribute line, type FALSE. Click the Set button, then the Apply button, then OK.
Discussion
Moving from mixed-mode operations to native mode is the final step in most migrations from Exchange 5.5 to Exchange 200x. Your ...