...though this one is subtly different from any others I've found.
Scenario
Windows 2K8 Standard R2 box running AD and Exchange (I know...I know...it wasn't my choice)
We have successfully completed a cutover to Office365. Mail flowing, everybody is happy.
I now need to retire this box as the rest of the infrastructure resides in Hyper-V. I can't DCPROMO this AD server until I uninstall Exchange so Exchange HAS to be uninstalled. We are using DirSync so all Exchange attributesMUST remain (I'll use ADSIEdit from here on in as I cannot see the point of moving to the cloud and promptly installing Exchange 2013).
How do I do this and in what order etc. Everything I've read relates to Hybrid scenarios which isn't applicable to us. I'm only using DirSync for passwords otherwise I'd happily turn it of and manage it all in the cloud.
Any help...