Hi, i tried to run my php file that can send mail,it is just very simple or basic way of sending mail because i am just learning on this.but when i run my file this is what it shows

( ! ) Warning: mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() in C:\wamp\www\SenMail\www\Reg.php on line 15