java mail 发邮件问题


怎么连接不上服务器啊 ，请问该怎么搞，忘高手解答
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
   <%@ page import="java.util.*,javax.mail.*"  %>
   <%@page import="javax.mail.internet.*"%>
   <%@ page import="javax.activation.*" %>
   <%@ page import="java.net.*" %>
   
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <%
     // String host="192.168.1.100";
      //  String host="202.38.64.1";
        String to=new String(request.getParameter("to").getBytes("iso8859-1"),"gbk");
        String from=new String(request.getParameter("from").getBytes("iso8859-1"),"gbk");
        String subject=new String(request.getParameter("subject").getBytes("iso8859-1"),"gbk");
        String body=new String(request.getParameter("body").getBytes("iso8859-1"),"gbk");
        boolean sessionDebug=true;
        //设置mail服务器和使用传送协议
        java.util.Properties props=System.getProperties();
        props.put("mial.smtp.host","stmp.163.net");
        props.put("mail.smpt.auth","true");
        //产生session服务
        javax.mail.Session mailSession=javax.mail.Session.getDefaultInstance(props,null);
        mailSession.setDebug(sessionDebug);
        Message msg=new MimeMessage(mailSession);
        //设置发信人
        msg.setFrom(new InternetAddress(from));
        //设置收信人
        InternetAddress []address={new InternetAddress(to)};
        msg.setRecipients(Message.RecipientType.TO,address);
        //设置主题
        msg.setSubject(subject);
        //设置发信时间
        msg.setSentDate(new Date());
        //设置邮件mime type
        msg.setText(body);
        msg.saveChanges();//保存对文件的修改
       //根据session生产Transport对象
        Transport transport=mailSession.getTransport("smtp");
        //连接到smtp服务器
        transport.connect("smtp.163.net", "1_test", "123456789");
        
        //邮件发送
       // Transport.send(msg);
        transport.sendMessage(msg,msg.getAllRecipients());
        transport.close();
        %>
        邮件已发送至：<%=to%><br>
            from:<%=from%><br>
                
               
                    邮件主题：<%=subject%><br>
                     邮件内容：<%=body%><br>
    </body>
</html>