Warning -- 'mail' Error

[instyle]

sending confirmation mail to customer, after filled out the registration form, i will get the follow error,

 

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:\apache\htdocs\examples\email.php on line 43

 

 

any idea..? is there pblm with php.ini

 

help..