BillI tried everyting that you had in your link:But still cannot send Yahoo mail from my Outlook 2010 client. I even tried the fogllwino:1) Do this on another computer running windows xp (my computer is running windows 7) setup Outlook and my account information, try to send, no luck2) Do this at my brothers house, my ISP is ATT his ISP is Comcast, no luck.Again, I can receive mail fine but cannot send. Any other thoughts?