为什么我的javamail 在connet的时候总是错误。

[zhtoad]

我第一次用javamail
在运行的时候总是出现：

javax.mail.MessagingException: Could not connect to SMTP host: smtp.163.net, port: 25;
nested exception is:
java.net.SocketException: Permission denied: connect

我的程序大概是：
Properties props = System.getProperties();
props.put("mail.smtp.host",host);
props.put("mail.smtp.auth", "true");
Session session = Session.getDefaultInstance(props, null);
Transport transport = session.getTransport("smtp");
transport.connect("smtp.163.com", "name", "passport");
就在这里出错了
请问，这该怎么办？
谢谢

[zhtoad]

要是有一个例子，登陆smtp.163.com，直接更改一下用户名和密码就能发出一份最简单的邮件就好了
谢谢

[阳二快跑]

Permission denied.禁止访问？？

[15年老程创业中]

Session session = Session.getDefaultInstance(props, null);
后面的null参数，要传递javax.mail.Authenticator的一个实例

[15年老程创业中]

javax.mail.Authenticator的继承类是javax.mail.PasswordAuthentication
PasswordAuthentication passwordAuth=new PasswordAuthentication(username,password);

[suhaibolove]

看看下面的例子吧，下面是发送邮件的例子：

package com.shobos.email;

import java.util.Properties;
import java.util.Random;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendMail {

	/**
	 * 
	 * @param from  来自于哪里
	 * @param to    发送的目标地址
	 * @param subject    发送主题
	 * @param bodyContent   发送内容
	 */
	public static void sendEmail(String from, String to, String subject,
			String bodyContent) {
		
		final String emailUserName = "";    //自己的邮箱地址
		final String emailUserPass = "";    //自己的邮箱密码
		try {
			Properties props = System.getProperties();
			props.put("mail.smtp.host", "smtp.163.com");
			props.put("mail.smtp.auth", "true");
			Session session = Session.getDefaultInstance(props,
					new Authenticator() {
						public PasswordAuthentication getPasswordAuthentication() {
							return new PasswordAuthentication(
									emailUserName, emailUserPass);
						}
					});
			MimeMessage message = new MimeMessage(session);
			message.setFrom(new InternetAddress(from));
			message.addRecipient(Message.RecipientType.TO, new InternetAddress(
					to));

			message.setSubject(subject);
			message.setContent(bodyContent, "text/html;charset=utf-8");

			message.saveChanges();
			Transport.send(message);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		String[] array = new String[] { "哈", "和", "嘻", "我", "你", "他", "世", "界",
				"非", "爱", "常", "谭", "最", "谈", "笑", "疯", "声", "挥", "斥", "方",
				"遒", "邻", "居", "中", "文", "家", "乡", "稻", "田", "中", "绿", "油",
				"油", "的", "禾", "苗", "在", "春", "风", "的", "浮", "动", "下", ",",
				"向", "农", "民", "叔", "叔", "阿", "姨", "招", "手", "像", "是", "在",
				"说", "我", "已", "经", "健", "康", "茁", "壮", "的", "成", "长", "了",
				"你", "们", "放", "心", "吧", "到", "时", "候", "我", "会", "给", "大",
				"家", "带", "来", "惊", "奇", "这", "时", "太", "阳", "懒", "洋", "洋",
				"的", "从", "云", "朵", "中", "爬", "了", "出", "来", "这", "给", "了",
				"大", "地", "淋" };
		int i = 0;
		Random rand = new Random();
		String from = "";
		String to = "";
		while (i < 5) {
			String str = "";
			for (int j = 0; j < 10; j++) {
				int r = rand.nextInt(100 - 1) + 1;
				str += array[r];
			}
			i++;
			sendEmail(from, to, i + " hello "
					+ i, str);
			System.out.println("i------" + i);
			try {
				Thread.sleep(30000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}

		}
	}
}

[beiouwolf]

163要求认证
可以用LS的方法试一下
现在大多邮箱都有自己的特殊认证,所以一般针对每一种邮箱都需要去测试一下各自的认证参数

[热烈的红颜]

有一些 是做了验证的
没有通过验证 是不可以 发送信息的

[rosewj]

LZ我这里有sina的例子 你可以试试 现在好像126和163的都不能发 。。

import   java.util.*;   

import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import   javax.mail.internet.*;   
import   java.io.*;   
  
/**   
*   @author   Bromon   
*/   
public   class   SenderWithSMTPVer   
{   
String   host="";   
String   user="";   
String   password="";   
  
public   void   setHost(String   host)   
{   
  this.host=host;   
}   
  
public   void   setAccount(String   user,String   password)   
{   
  this.user=user;   
  this.password=password;   
}   
  
public   void   send(String   from,String   to,String   subject,String   content)   
{   
  Properties   props   =   System.getProperties();   
  props.put("mail.smtp.host",   host);//指定SMTP服务器   
  
  props.put("mail.smtp.auth",   "true");//指定是否需要SMTP验证   
  try   
  {   
    Session     mailSession   =   Session.getDefaultInstance(props,   null);   
  
  
    mailSession.setDebug(true);//是否在控制台显示debug信息   
  
    Message   message=new   MimeMessage(mailSession);   
    message.setFrom(new   InternetAddress(from));//发件人   
    message.addRecipient(Message.RecipientType.TO,new   InternetAddress(to));//收件人   
  
    
    message.setSubject(subject);//邮件主题   
    message.setText(content);//邮件内容   
    message.saveChanges();   
  
    Transport   transport   =   mailSession.getTransport("smtp");   
  
    transport.connect(host,   user,   password);   
    transport.sendMessage(message,   message.getAllRecipients());   
    transport.close();   
  }catch(Exception   e)   
  {   
    e.printStackTrace();   
  }   
  
}   
  
  
  
public   static   void   main(String   args[])   
{   
  SenderWithSMTPVer   sm=new   SenderWithSMTPVer();   
  
  sm.setHost("smtp.sina.com");//指定要使用的邮件服务器   
  sm.setAccount("账号","密码");//指定帐号和密码   
  
  /*   
*   @param   String   发件人的地址   
    *   @param   String   收件人地址   
    *   @param   String   邮件标题   
    *   @param   String   邮件正文   
  */   
  sm.send("[e-mail]","[e-mail]","标题","内容");   
}   
}  

[painforever]

[Quote=引用 7 楼 rosewj 的回复:]
LZ我这里有sina的例子 你可以试试 现在好像126和163的都不能发 。。
Java code
import java.util.*;

import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.*;
import java.io.*;

/**
* @author Bromon
*/
public class SenderWithSMTPVer
{
String host="";
String user="";
String passwo…
[/Quote]

想问一下，我照着你的例子配了一下，编译都没有问题，可以通过，但是在运行的时候时不时的就报Authentication异常，但有时又能正常运行，请问一下这是为什么？

[时光瞄]

楼上几位的例子不错