I have just installed two new Windows 2003 Servers acting as DC's and am ready to install Exchange 2007 onto 2 new mail servers, but the active directory thinks that one of my existing separate Exchange 2000 Servers (running on a win2k server) is a DC. I can see it listed in the metadata and in Active Directory Site and Services with NTDS settings. The 2 new DC's automatically replicate with the server. This is all one domain, the server has never been a DC, dcpromo doesn't recognise it as a DC. Can I safely remove this from the metadata, I need to be careful as this is a working mail server with 200 clients ?