I am in the researching/planning stage for my upgrade from Exchange 2007 to Exchange 2013. Both at the same location, same forest and same domain. To throw a twist into this scenario we recently changed our name thus I also need to update our domain name from mail.oldname.com to mail.newname.com
Information that I have found states " You need to create a legacy domain name system (DNS) host name so your legacy Exchange environment (Exchange 2007) and Exchange 2013 can coexist. During coexistence, we recommend creating and using, for example, a host name of legacy.contoso.com. "
It seems as though because I am changing our domain name that I could just keep the mail.oldname.com associated with the Exchange 2007 server and create the new dns entry mail.newname.com and point that to the Exchange 2013 server.
Does this sound correct?