I can send some aol mail to yahoo, but others don't get there?

I tried to forward a message to my yahoo, but it didn't arrive. Then I tried to copy and paste it into aol mail and send that way. Still didn't get there. However, and here's the nutty thing. I just sent two "test" messages from that same old aol mail account with nothing in the body and both of them got thereQ This is driving me crazy! Also, is there no automatic folder for old mail that has been read?