I had my Pre2 and TouchPad both syncing to an Exchange Active Sync server at work just fine. When I moved from a Pre+ to the Pre2 the EAS settings were copied across ok from my Palm profile, so presumably these settings are in the cloud somewhere.
A couple of months ago the Exchange server was moved to a different data centre so its IP address changed. Rather than modify the old account, I instead deleted it and again everything seems to be working fine; however my router at home is complaining that both my Pre2 and TouchPad are still making hundreds of UDP connections a second to the old IP address of the server. There is no reference to that server anywhere in either device, so I'm at a loss as to why it is still trying to reach it.