You can configure your outgoing mail server as follows for,

Settings>>Technical>>Email>>Outgoing Mail Servers

SMTP Server : smtp.gmail.com

Connection Security : SSL/TLS

if you select SSL/TLS in Connection Security the SMTP Port is been automatically set.

Now, If you set your Email and Password, the mail reached at other side is sent from your Email.

Test Connection.....

Congrats, your outgoing mail server is configured.