We are upgrading from SBS 2003 to SBS 2011. During this upgrade the domain will change (firm changed its name) and we are using a different local IP address. My question is can I have both the existing SBS 2003 and SBS 2011 on the same physical network and how do I make sure the old server no longer receives e-mails?
We expect to keep the old server running for no longer than a week just to make sure all data and emails are captured and moved to the new server. We are planning on going to each existing workstation and exporting the PST and shared folders. We will then connect the workstation to the new server and upload the information. There are only 12 users but about 45 Gbytes of mail and 80 Gbytes of shared documents.