Outlook keeps forwarding emails and I cant stop it!

I had my outlook email set to forward my emails to my gmail account. I wanted it to stop forwarding them but when I went to settings>options>connected accounts there were no accounts listed that emails were being forwarded to! I ended up deleting my gmail account and started a new one so that I would no longer receive the emails from my outlook account. But now every email I receive  on my outlook account has an attachment from MAILER-DAEMON because it cant forward that message. This makes it very frustrating the read and sort through emails and I just want it to stop, but I dont know how because it doesnt show up in the settings. Please help!