opencart tidak bisa kirim email

nanya donk..untuk versi opencart yg terbaru..cara setting biar kalo ada yg registrasi,dsbny..agar bisa kirim email ke customer tsb, dsbnya..

saya pakai gmail..

settingan sekarang adalah :
mail protocol :mail
smtp host : kosong
smtp username : kosong
smtp password : kosong
smtp port : 25
smtp timeout : 5

ketika saya coba registrasi, muncul error message :
Warning: mail() [function.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:\xampp\htdocs\system\library\mail.php on line 157Warning: mail() [function.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:\xampp\htdocs\system\library\mail.php on line 157Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\index.php:100) in C:\xampp\htdocs\system\engine\controller.php on line 28Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\index.php:100) in C:\xampp\htdocs\system\engine\controller.php on line 29

tolong bantuannya...terima kasih

itu karna anda install opencart di localhost ( WAMP, XAMP, Lamp, ect ) kebnykn software localhost tidak support Email function.

kalau di upload di ke Server hosting km tingal isi apa yg harus di isi aja. akan bisa send email dengan pasti