I get at least one very suspicious email delivered to my Yahoo email address daily. Don't know why Yahoo cannot recognize them as invalid and probably containing viruses. Yahoo should delete - not deliver them - or provide Regular Expression capability in filters .For example today I received email from this address:
bczj0e0g3fpchijukgivmet3foqigcvzjeftjdku5qs2plkfzf65n74mgl0wmjgkigl4k9ind9h1baf8mntyhari@shackfuture.com.
Seriously Yahoo? You can't recognize that someone trying to scam me or introduce a virus to my PC????