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If you want to consolidate you will have to move to one domain or the other - <br />
In the A domain you can get AD rolling then remove the old NT controller thne move users from domain B to it.<br />
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Since exchange is involved I would personally move the 2k3 servers in domain A to domain B and continue to make use of them as domain controllers.<br />
I would then migrate any users in domain A to domain B.
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What is the best way to handle this upgrade from NT4 (SBS) to a 2003 Server AD? &nbsp;I tried ADMT in the past but it wanted to rename the users to &quot;Username1&quot; instead of just &quot;Username&quot;. &nbsp;Also note that I see a user for each mailbox on the 2003 SBS in domain &quot;B&quot; that there are user IDs (appear to be SIDs) that are set up for access to the exchange mailboxes.<br />
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Another issue is desktop settings, look &amp;&nbsp;feel on the clients...they are pretty picky and I want it to be as unnoticeable as possible. I was thinking there was a utility for this when you change domains but not really familiar with it. &nbsp;Any suggestions on best case scenario?
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Well using ADMT will work fine i think you were using an old version is why it wanted to rename to username1.<br />
Going this route all you would need to do is run admt and move the users into the sbs domain.<br />
Thats the route I would go. &nbsp;Also the mailbox SID on domain B shouldnt be an issue.<br />
As far as the client machines....<br />
The client machines will have to join the domain anyways so a new profile will be created automatically.<br />
here is an ongoing thread about this very question<br />
<a href="https://www.experts-exchange.com/questions/23577832/Re-Join-Domain-and-Use-old-profile.html?cid=238&anchorAnswerId=22062430#a22062430" rel="ugc">https://www.experts-exchange.com/questions/23577832/Re-Join-Domain-and-Use-old-profile.html?cid=238&anchorAnswerId=22062430#a22062430</a>
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To use ADMT you have to create a trust between domains. &nbsp;SBS 2003 will not let you create a trust with any other domains so ADMT is out of the question I'm afraid.<br />
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I would create the user accounts manually on the SBS box and then join all the PC's and 2003 servers to the SBS domain.
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Ah thats right SBS wont allow you to!<br />
My bad.
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If domain &quot;A&quot; clients are using the Exchange Server on domaiin &quot;B&quot; then surely they already have user accounts in domain &quot;B&quot; or they wouldnt be able to have Exchange mailboxes. &nbsp;Your only job then is to join all the PC's to domain B and configure their local profile settings.
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I have come across a network situation where we have a NT4 (sp4) PDC server with multiple 2003 servers and clients as part of that domain (we'll say domain &quot;A&quot;). &nbsp;However there is a Windows 2003 SBS server that is part of another domain (domain &quot;B&quot;) that has no members but is the file and Exchange server for domain &quot;A&quot; clients.<br />
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My question is what is the best way to eliminate the NT4 server and move all of the nt4 domain to a 2003 AD. &nbsp;<br />
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I would prefer to stay in the &quot;A&quot; domain but I'm not sure that is possible if I want to continue to utilize the SBS server that is already a domain controller for the &quot;B&quot; domain.<br />
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Can I set up one of the domain &quot;A&quot; 2003 servers with AD and use ADMT to get the clients and promote that server?
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I have come across a network situation where we have a NT4 (sp4) PDC server with multiple 2003 servers and clients as part of that domain (we'll say domain "A").  However there is a Windows 2003 SBS server that is part of another domain (domain "B") that has no members but is the file and Exchange server for domain "A" clients.

My question is what is the best way to eliminate the NT4 server and move all of the nt4 domain to a 2003 AD.  

I would prefer to stay in the "A" domain but I'm not sure that is possible if I want to continue to utilize the SBS server that is already a domain controller for the "B" domain.

Can I set up one of the domain "A" 2003 servers with AD and use ADMT to get the clients and promote that server?

Best method of migrating users from old nt4 sbs domain to 2003 sbs or another 2003 server ad...

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

Windows Server 2003

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.