My outlook account is forwarding emails to a deleted yahoo account, but won’t show the connected account in the options.

This started this morning. The yahoo account is deleted, and I keep getting email from Mailer-Daemon@Mailer-Daemon saying the forwarding account has been suspended. It's deleted. I try to make my Outlook not forward to the address anymore, and that address won't show up in the connected or forwarded accounts option. Please help!