PHP mail: 为什么总是不成功呢？

作者：半瓶墨水链接：http://www.2maomao.com/blog/php-mail-fails/

明明wordpress里面也是直接调用的mail函数，我稍微改了地址，也调用一下

后来发现我调用的就总是出错（调用结果直接返回false），不知道为啥呢？

$msg = "E-MAIL SENT FROM WWW SITE\n";
$msg .= "Sender's E-Mail:\t$_POST[sender_email]\n";
$msg .= "Message:\t$_POST[message]\n";
$to = "maoimao@gmail.com";
$subject = "Web Site Feedback";
$header = "MIME-Version: 1.0\n";
$header .= "Content-Type: text/plain; charset=\"utf-8\"\n";
$header .= "From:" . $_POST[sender_name] . "<" . $_POST[sender_email]. ">\n";
if (@mail($to, $subject, $msg, $header)) {
echo "<h2>Hey " . $_POST[sender_name] . ",</h2><p>thanks for your message! I'll get back to you as soon as possible.</p>";
} else
{
echo "Oooops...something wrong with the mail script or mail server...";
exit;
}
?>