A company plans to use Office 365 to provide email services for users.
You need to ensure that a custom domain name is used.
What should you do first?
A.
Add the custom domain name to Office 365 and then verify it.
B.
Verify the existing domain name.
C.
Create an MX record in DNS.
D.
Create a CNAME record in DNS.
A
The first step is to verify to Office 365 that you own the domain (How do we do this?). Otherwise, anyone could use any domain name they wanted to, including yours!
I think B is the answer. IIRC, I had to prove I owned or had control over my public DNS.