Mail wont send... :/

ok so today and a while before I could never send mail from Mail. I keep getting this error:


The sender address [my email] was rejected by the server smtp.live.com.

Select a different outgoing mail server from the list below or click Try Later to leave the message in your Outbox until it can be sent.

Sending from: [name] [my email]

I have all the settings right following what others have said, but it wont send. It will get the emails, but no sending

 

Well that's the only message I get when I try and and mail. **btw it's a hotmail email** and that's all the info I'll give out without giving away my email and name... >_> which I don't wanna do