We have been running Exchange 2007 basically since it was released. Over all it is a great product and quite an upgrade over Exchange 2003. Last month SP1 was released with some much anticipated improvements, including major improvements in the administrative UI, OWA, and more. Unfortunately not all of us gets those new features.
The service pack installer is actually a full copy of exchange, not an patch. So just like the first time you install Exchange 2007 the setup runs through the "Readiness Check" to make sure you meet all the requirements. Seeing how Exchange is already installed I wasn't too concerned about not meeting any of the requirements. Boy was I wrong. I was quickly greeted with an unexpected error message:
Error: Microsoft Exchange Server 2007 setup cannot continue because this computer belongs to a domain that has a single-labeled DNS name. DNS domain name: mydomainname
Microsoft Exchange Server 2007 setup cannot continue because this computer belongs to a domain that has a single-labeled DNS name. DNS domain name: mydomainname
Humm. That's not good. It appears that exchange doesn't like the fact that the windows domain name is "mydomainname" instead of something like "mydomainname.local" or "mydomainname.com". I knew this day would come. We have avoided renaming the domain for a while now because it is not a fun process. The instructions to rename a domain are contained in an 82 page 1.2MB word document, and that's before you event get into the exchange stuff.
So I read all the documentation and was prepared to pull the trigger when I came across an interesting Knowledge Base article. In summary you can't rename a domain that has an Exchange 2007 server in it, and if you do the only solution is to rename it back.
So I can't install SP1 with a single labeled DNS name and if you have Exchange 2007 already installed you can't rename the domain. Microsoft just backed me into a corner.
I'm not alone as it appears there are several other people with this problem. The worst part is the lack of documentation. None of the release notes talk about this the requirement. Even the new Deployment checklist doesn't say anything about it.
HELP MICROSOFT!!! We want SP1 too.
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Disclaimer: The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.
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