Description: To be able to send e-mail, you need access to an "SMTP server". SMTP stands for "Simple Mail Transfer Protocol". Most of the email on the internet is sent using SMTP servers.
If your email address is "you@yourhost.com", then there is a good chance your SMTP server is either "yourhost.com" or something like "mail.yourhost.com" or "smtp.yourhost.com". You need to find out exactly what it is. Your email program should have a "Settings" page which shows you the name of your SMTP server (perhaps shown as "mail server" or "outgoing mail server".)
