Email shown as "sent" never reach recipients when sent via my yahoo email address?

Hi All!





It's my first time here and I look forward to your response.





When I want to send mail with Yahoo, I simply click on the little envelope sign in Yahoo Messenger (which is open all the time)and it opens up a new IE page for Yahoo Mail, which requests me to sign in again. As soon as I'd signed in, I get another "pop-up" message from Yahoo Messenger stating that, as I'd signed in via another computer, it would close down.





I receive email, compose email and can even click on the forward, reply or send buttons - BUT even though all those mails reflect as "sent" in my Sent Items folder, they NEVER reach their destinations.





What am I doing wrong?





I sent an email to a school buddy and had one word in the subject line: "Hi". He did not receive it and I re-did the mail on my husbands desktop using his ISP email account. It did not go through due to a "spam" warning about the word "Hi".





Was my account blocked somewhere because of that one email?





Please help!

Email shown as "sent" never reach recipients when sent via my yahoo email address?
This is not an answer to you'r question.I am having the same problem.I send emails to friends and it shows they were sent and no one is getting them.I hope someone can help and tell me why?