I think pretty much all email providers (and other systems that want to send on your behalf) have this. More or less the same process where they tell you what to add and then a "check my stuff" button to verify. Which is great.
Sounds good. As I said it was my first time, and I'd just glossed over the specs and did not look forward to it (I usually don't enjoy sysadmin work). So, was just pleasantly surprised.