Function.mail php

Bonjour tout le monde
S'il vous plait c quoi la solution a ce probleme,verifier smtp mais comment ??
Warning: mail() [<a href='function.mail'>function.mail</a>]: Failed to connect to mailserver at "smtp.gmail.ma" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set() in C:\wamp\www\association\edit.php on line 12

voila mon code et merci

<?php
ini_set('SMTP','smtp.gmail.ma');
$to = '***@***';
$subject = 'le sujet';
$message = 'Bonjour !';
$headers = 'From: ***@***' . "\r\n" .
'Reply-To: ***@***' . "\r\n" .
'X-Mailer: PHP/' . phpversion();

mail($to, $subject, $message, $headers);
?>