We moved all our email from on premise to Office 365 hosted email over a year ago. A year ago I simply turned my exchange 2003 server off. The server has been off every since. We do not use DirSync. Now I am ready to upgrade to 2012 domain. What do I need to do about the exchange 2003 server (we are getting rid of the server)?
Is it possible to just remove exchange from the active directory. I don't really need to uninstall from the server because we getting rid of the server immediately.
Please refer this article to uninstall Exchange 2003 gracefully.
https://support.microsoft.com/en-us/kb/833396