"Sure it can, if you configure it correctly." implies that doing it correctly is basically always possible.
If you are trying to imply that, it's reasonable to counter-argue that no, it's not always possible. It's not some easy "sure it can".
If you're not trying to imply that, then you're burying the lede and hiding the important part of the equation. The ability to do things correctly is not going to fix the problem.
"Your random VPS can just send email from any address you like and expect it to be delivered"