#Next generation volume licensing microsoft update
You'll have to sign in to yourhostingcompany to update these DNS records." Next, we'll determine which DNS records you need. The page said: "Get ready to update DNS records to work with Office 365. It tries to go right into the Update DNS records to work with Office 365, but unless you want to move your MX records to point to the online servers, you don't want to do continue into the Update DNS records section yet. (When you JUST verify the domain is yours, they don't modify the MX records.) This leaves the domain setup process incomplete. nothing untoward should happen until you start messing with the domain's MX records. Once you switch the records, all email sent to your domain will begin coming to Office 365."(technet) "In sum: until you switch over email by either changing the nameserver records or the domain's MX record to Office 365, people will continue to receive email sent to the email addresses wherever they currently get email.
Their help starts to confuse when they push you to add all your "custom domain" users now or they won't get email. Email will continue to arrive at your current on-premises email server if that’s what you’ve got set up already." (technet)
It just means that the domain is ready to set up with Office 365 email and other cloud services when you’re ready to do that. "When you add and verify your domain in Office 365, it doesn’t affect your current on-premises services. The most notable thing on the previous page for me was the following statement: I thought I'd give you a little update on my experiences with Office 365 from a business / volume license standpoint. Technet had a good article to help you walk through setting up Office 365, but they now re-direct you to.