note 112777 added to book.mail

My question is about sending mail using php... so, Can any one explain me this error...?? thx.. 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:\wamp\www\my\e.php on line 12 ---- Server IP: 69.147.83.199 Probable Submitter: 123.237.168.201 ---- Manual Page -- http://php.net/manual/en/book.mail.php Edit -- https://master.php.net/note/edit/112777 Del: integrated -- https://master.php.net/note/delete/112777/integrated Del: useless -- https://master.php.net/note/delete/112777/useless Del: bad code -- https://master.php.net/note/delete/112777/bad+code Del: spam -- https://master.php.net/note/delete/112777/spam Del: non-english -- https://master.php.net/note/delete/112777/non-english Del: in docs -- https://master.php.net/note/delete/112777/in+docs Del: other reasons-- https://master.php.net/note/delete/112777 Reject -- https://master.php.net/note/reject/112777 Search -- https://master.php.net/manage/user-notes.php