Confirm Exchange 2003 is removed from AD and the Email Organization

Hello,

I ran 2 Exch Svrs for years.  Last year I added 2 Exch Svr 2010 Svrs.  A few months ago I removed 1 of the 2003 Exch Svr fine.  This other server was down for a month so I figured it was OK to remove.  NOTE -I format the server afterwards. I tried to uninstall Exchange 2003, it looked good for a while.  At the end I got

[10:17:52] !!!!!!!!!!Setup completed successfully!
[10:18:24]  CComBOIFacesFactory::QueryInterface (f:\titanium\admin\src\udog\bo\bofactory.cxx:54)
           Error code 0X80004002 (16386): No interface.

Most Exch services were removed, but not all.  The uninstall program was removed.

I could load Server Manager and removed the server from the Admin Group.

How can I confirm Exchange 2003 is truly removed from AD and the Email Organization...?

Thanks, Tom...

Tom Karpowski...