Now that you have entered information about how you plan to get mail, Evolution needs to know about how you want to send it. Select a server type from the Server Type list.The following server types are available: Uses the Sendmail program to send mail from your system. Sendmail is more flexible, but is not as easy to configure, so you should select this option only if you know how to set up a Sendmail service.  Sends mail using an outbound mail server. This is the most common choice for sending mail. If you choose SMTP, there are additional configuration options. See SMTP Configuration for more information.
