We manage one site in a global exchange organization. The rest of the Org are going to create an AD forest but not for a ages and they're not expecting to upgrade exchange for years. However we are already running our own seperate AD Forest and want to install Exchange 2003.
Currently or 5.5 server connects to a 5.5 remote bridgehead server via x400. We propose a staged migration to exchange 2003 using ADC to sync the 5.5 database with AD and replicate Public folders, whilst sending mail and replicating Gal changes via x400. Eventually we hope to decom the old 5.5 server and run with exchange 2003 only.
We've tried out this configuration in our test environment but I'm a little concerned about the implication of being the first 2003 server in the Org especially with respect to the ADC agreements being 'Primary' connections.
I'm worried that changes we make will impact the rest of the org...
can anyone see any problems with this set up?
Will being the first AD forest to join the Org cause problems when the rest of the Org decide to implement there own AD Forest?
Will ADC/exchange 2003 try and make changes to the other exchange sites and servers?
Any help with this would be really appreciated.