How is your host?
I see you have set the SMTP Server to authsmtp.streamline.net, this suggest it is an smtop server that requires authentication. the Email Password server behaivor does not support SMTP servers that require authentication. It uses the PHP mail() function which cannot pass a username or password to the SMTP Server for authentication.
Your host should have an alternate SMTP server that you can use for sending mail through a php script that does not require authentication, you will need to contact them to find out what they offer.