To start, I've never done this before. I have a Win 2k3 server with domain test.com. We have Exchange 2k3 in this domain as well as all of our PCs. We want to change our domain to test.local. I have licenses for Server 2k8 and Exchange 2k7. I have the hardware to implement new servers if needed. What is my best course of action to get my domain changed from test.com to test.local without losing any of my Exchange data. (mail, calendars, etc.)

1. First of all make full backup of all servers. 2. Are you sure that you need to rename your domain? I so, rename the domain. 3. Then do the upgrade. There is a lot of references for domain rename. I have just responded in another thread a give some of them: http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/7e11c937-8d21-47c8-bd32-f9fdbff3c2b8 4. For AD upgrade see the guide here http://technet.microsoft.com/cs-cz/library/cc731188(WS.10).aspx Regards Milos

Hello, The domain rename operation is not supported in Microsoft Exchange Server 2007 or Exchange Server 2010. DNS domain rename is supported in Exchange Server 2003. However, renaming of the NetBIOS domain name is not supported in any version of Exchange Server. More here: http://technet.microsoft.com/en-us/library/cc738208(WS.10).aspx You will get details about how to proceed in the article. As you are in Exchange 2003 then you can rename the DNS name of your domain. Here there is no need to rename the NetBIOS name. For that, you can proceed without issues. Just backup at least one DC / DNS / GC server before proceeding. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator Microsoft Certified Trainer

1. First of all make full backup of all servers. 2. Are you sure that you need to rename your domain? I so, rename the domain. 3. Then do the upgrade. There is a lot of references for domain rename. I have just responded in another thread a give some of them: http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/7e11c937-8d21-47c8-bd32-f9fdbff3c2b8 4. For AD upgrade see the guide here http://technet.microsoft.com/cs-cz/library/cc731188(WS.10).aspx Regards Milos

Hello, The domain rename operation is not supported in Microsoft Exchange Server 2007 or Exchange Server 2010. DNS domain rename is supported in Exchange Server 2003. However, renaming of the NetBIOS domain name is not supported in any version of Exchange Server. More here: http://technet.microsoft.com/en-us/library/cc738208(WS.10).aspx You will get details about how to proceed in the article. As you are in Exchange 2003 then you can rename the DNS name of your domain. Here there is no need to rename the NetBIOS name. For that, you can proceed without issues. Just backup at least one DC / DNS / GC server before proceeding. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator Microsoft Certified Trainer