I agree with Cesar Rodriguez below. I really doubt a Terminex or window blinds storefront in Europe would be able to help me in Colorado. And when I set up a filter to send all *.eu emails to Spam, the filter resets in a few minutes to Inbox!?!
I am having this problem too. If Yahoo's algorithms can't weed out spam and fake email accounts, we can. But not if our tools keep getting yanked out from under us.
All of them have random characters before the "@" symbol. Your algorithms should be catching them before they land in our emails. Blocking each individual domain is tedious and reactionary. Please increase your filtration, or allow users greater control to block @*.eu addresses across the board unless access is granted to specific, known domains.