I have a network with 2003 servers and exchange 2003 in a single label domain.
I have two new servers with 2008r2 and exchange 2010.
I want the single label domain to go away but after reading around it appears a domain rename in this situation is a bad idea because it will break exchange.
I went ahead and created a new domain with a fqdn, joined the second server and setup exchange 2010. After creating new stub zones on both the old and new domain's dns servers I can now ping from both sides using host name.
So now I figure I should just setup a trust and migrate from old forest/domain to the new one. Then move mailboxes from old server to new.
I'm wondering if I will run into any issues migrating from the old single label domain (domain1) to the new 2008 one (domain2.local). Is there anything I should look out for? Has anyone done this? :) Just looking for any advice, input, recommendations, recommended third party tools etc...
also the single label domain is the same as our external domain without the .com. So now the new domain name is different from our external domain. I don't think this should be a problem but new to 2008.
Any input is greatly appreciated.