php mailer类调用远程SMTP服务器发送邮件实现方法

<?php
require 'class.phpmailer.php';
try {
  $mail = new phpmailer(true);
  $body = file_get_contents('contents.html'); //邮件的内容写到contents.html页面里了
  $body = preg_replace('//////','', $body); //strip backslashes
  $mail->issmtp(); // tell the class to use smtp
  $mail->smtpauth  = true; // enable smtp authentication
  $mail->port = 25; // set the smtp server port
  $mail->host = "mail.yourdomain.com"; // 远程smtp服务器
  $mail->username = "yourname@yourdomain.com"; // 远程smtp 服务器上的用户名
  $mail->password  = "yourpassword"; // 你的远程smtp 服务器上用户对应的密码
  //$mail->issendmail(); //告诉这个类使用sendmail组件，使用的时候如果没有sendmail组建就要把这个注释掉，否则会有
  $mail->addreplyto("yourname@yourdomain.com","first last");
  $mail->from    = "fromname@yourdomain.com";
  $mail->fromname  = "first last";
  $to = "toname@domain.com";
  $mail->addaddress($to);
  $mail->subject = "first phpmailer message";
  $mail->altbody = "to view the message, please use an html compatible email viewer!"; // optional, comment out and test
  $mail->wordwrap = 80; // set word wrap
  $mail->msghtml($body);
  $mail->ishtml(true); // send as html
  $mail->send();
  echo 'message has been sent.';
} catch (phpmailerexception $e) {
  echo $e->errormessage();
}
?>