通过socks代理发送邮件

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因为javamail不支持http代理，所以需要搭建socks代理

服务器配置

软件是danted，配置如下(允许匿名代理)，其中internal和external根据需要修改

logoutput: /var/log/danted.log
internal: 0.0.0.0 port = 6666

#这里external为代理服务器上访问外网的网卡的IP.
external: 200.100.1.10

method: none
clientmethod: none
user.privileged: proxy
user.notprivileged: nobody
user.libwrap: nobody
client pass {
from: 0.0.0.0/0 to: 0.0.0.0/0
log: connect disconnect
}
pass {
from: 0.0.0.0/0 to: 0.0.0.0/0 port gt 1023
command: bind
log: connect disconnect
}
pass {
from: 0.0.0.0/0 to: 0.0.0.0/0
command: connect udpassociate
log: connect disconnect
}
block {
from: 0.0.0.0/0 to: 0.0.0.0/0
log: connect error
}

客户端代码

其中，MyAuthenticator 不确定是否必要

class MyAuthenticator extends Authenticator {
    private String user = "";
    private String password = "";
    public MyAuthenticator(String user, String password) {
        this.user = user;
        this.password = password;
    }
    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(user, password.toCharArray());
    }
}
public class CAutoTest {

    public static void main(String[] args) throws IOException{

        Properties props = System.getProperties();
        props.setProperty("proxySet", "true");
        props.setProperty("socksProxyHost", "192.168.1.10");
        props.setProperty("socksProxyPort", "6666");
        props.setProperty("mail.smtp.host", "smtp.exmail.qq.com");
        props.put("mail.smtp.auth", "true");
        props.put("mail.debug", "true");
        // 设置邮件服务器主机名
        props.setProperty("mail.host", "smtp.exmail.qq.com");
        // 发送邮件协议名称
        props.setProperty("mail.transport.protocol", "smtp");

        MailSSLSocketFactory sf = null;
        try {
            sf = new MailSSLSocketFactory();
        } catch (GeneralSecurityException e) {
            e.printStackTrace();
        }
        sf.setTrustAllHosts(true);
        props.put("mail.smtp.ssl.enable", "true");
        props.put("mail.smtp.ssl.socketFactory", sf);
        Authenticator.setDefault(new MyAuthenticator("", ""));
        Session session = Session.getInstance(props);

        Message message = new MimeMessage(session);
        Address address = null;
        try {
            address = new InternetAddress(你的邮箱);
        } catch (AddressException e) {
            e.printStackTrace();
        }

        try {
            message.setFrom(address);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        try {
            message.setSubject("测试");
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        try {
            message.setText("test2");
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        try {
            message.setSentDate(new Date());
        } catch (MessagingException e) {
            e.printStackTrace();
        }

        Transport transport = null;
        try {
            transport = session.getTransport();
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        }
        //邮件服务器、发送邮箱账号、第三方验证码
        try {
            transport.connect("smtp.exmail.qq.com", 你的邮箱, 你的邮箱密码);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        try {
            transport.sendMessage(message, new Address[] { new InternetAddress(你的邮箱) });
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        try {
            transport.close();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        System.out.println("邮件发送！");

    }
}