The host name for your account should be an address for your mail server rather than your email address.
I can see you’re using an AOL email address here, if you’re using this one for the account too, the details should be as follows:
- SMTP Outgoing Server Address: smtp.aol.com
- Set the port to 587
- SMTP Username: YourUsername@aol.com (or @love.com, @games.com, etc.)
- SMTP Password: password you use to login to Mail
A full list of settings are available here: https://help.aol.co.uk/articles/how-do-i-use-other-email-applications-to-send-and-receive-my-aol-mail