My Yahoo address is getting spoofed bounce-backs. How do I stop this?

Today I found myself with more that 500 bounce-back e-mails in my Yahoo account. I have set up a filter to send most of them into a separate folder, Just In Case.

But this is bogus. How do I stop this? I am obviously being spoofed. From what I can tell it is through my web page. I set up my web page through Yahoo. The e-mail connected with the page is this account, although it would actually be typed out with the domain name of the web page. That is why I trace it back to my page. The messages reference that domain, not Yahoo.

1) How to do I stop it?

2) How do I report it?

Yahoo's "Help" pages do not address spoofing at all. As a matter of fact a search for the term comes up empty. So I need your help.

Thanks