Managing personal Outlook.com account settings, security, and privacy
It's all in the original post:
-Somebody tried to gain control of my Facebook account using my redundant email address. It wasn't me, so someone else must have control.
-When I try to 'recover account' on my old email, it shows it is now attached to another email account which I don't own. That account is a email address with the domain of a scamming website - so it makes sense that they might have stolen access of my email.