javamail发信的连接SMTP验证的问题，大哥大姐们帮我看看。

[jcfox]

MailBean.java

package fastfox.util;
import java.util.*;
import java.text.SimpleDateFormat;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.io.*;
public class MailBean {


public static void sendMessage(String smtpHost,String from,String to,String subject,String messageText)throws MessagingException{
System.out.println("Configuring mail session for:"+smtpHost);
SmtpAuth sa=new SmtpAuth();
sa.getuserinfo("jcren","mypassword");
java.util.Properties props=new java.util.Properties();
props.put("mail.smtp.auth","true");
props.put("mail.smtp.host",smtpHost);
System.out.println("Constructing message- from="+from+" to="+to);
InternetAddress fromAddress=new InternetAddress(from);
InternetAddress[] toAddresss=new InternetAddress[3];
toAddresss[0]=new InternetAddress("[e-mail]");
toAddresss[1]=new InternetAddress("[e-mail]");
toAddresss[2]=new InternetAddress("[e-mail]");
int i=0;
while(i<toAddresss.length){
Session mailSession=Session.getDefaultInstance(props,sa);
MimeMessage testMessage=new MimeMessage(mailSession);
testMessage.setFrom(fromAddress);
testMessage.addRecipient(javax.mail.Message.RecipientType.TO,toAddresss[i]);
testMessage.setSentDate(new java.util.Date());
testMessage.setSubject(subject);
testMessage.setText(messageText);
System.out.println("Message constructed");

Transport.send(testMessage);
System.out.println("Message sent!");
i++;
}
}

public static void main(String[] args){
String smtpHost="smtp.163.com";
String from="[e-mail]";
String to="[e-mail]";
String subject="Test message";
StringBuffer theMessage=new StringBuffer();
theMessage.append("ddddhello22,\n\n");
theMessage.append("Hope all is well on you end.\n");
theMessage.append("Cheers");
try{
MailBean.sendMessage(smtpHost,from,to,subject,theMessage.toString());
}catch(javax.mail.MessagingException exc){
exc.printStackTrace();
}
}

static class SmtpAuth extends javax.mail.Authenticator {
private String user,password;

public void getuserinfo(String getuser,String getpassword){
user = getuser;
password = getpassword;
}
protected javax.mail.PasswordAuthentication getPasswordAuthentication(){
return new javax.mail.PasswordAuthentication(user,password);
}
}
}
JSP引用：
<%@ page contentType="text/html;charset=gb2312" import="java.util.*,java.sql.*" %>
<jsp:useBean id="mailbean" scope="page" class="fastfox.util.MailBean" />
<%
String mailto=request.getParameter("cust_mail");
String mailfrom="[e-mail]";
String Subject="Subject";
String Content=request.getParameter("content");
mailbean.sendMessage("smtp.163.com",mailfrom,mailto,Subject,Content);
%>


报错：
javax.mail.SendFailedException: Sending failed;
nested exception is:
class javax.mail.MessagingException: Could not connect to SMTP host: smtp.163.com, port: 25;
nested exception is:
java.net.SocketException: Socket operation on nonsocket: connect
at javax.mail.Transport.send0(Transport.java:218)
at javax.mail.Transport.send(Transport.java:80)
at fastfox.util.MailBean.sendMessage(MailBean.java:35)
at _sales._hasten._sendedit__jsp._jspService(/sales/hasten/sendedit.jsp:8)

我用telnet smtp.163.com 25 却是通的。这是怎么一回事啊？help me!

[lijunisbug]

nslookup set type=mx look for 163.com
then you will get the mx addresses
such as mx1.163.com