带有MS Exchange的JavaMail：服务器和客户端都不支持身份验证机制

Posted 2021-04-05

我几天来一直试图从Grails应用程序发送邮件但没有成功。我正在使用：

• grails 1.3.7
• 邮件1.0插件
• spring-security-core 1.2.6插件
• tomcat 7.0.23

Specifficaly我正在尝试使用部署在Tomcat服务器上的应用程序发送邮件，该端口25没有身份验证，没有SSL。

我已经尝试从部署了应用程序的VMWare虚拟机发送带有telnet的消息并且它已经通过了。

这是我发送邮件的课程：

public boolean sendMessage(String to, String msgSubject, String msgText) 
{
    String host = "mail.mydomain.com";
    String username = "[e-mail]"; // your authsmtp username
    String password = "mypassword" // your authsmtp password
    String from = "[e-mail]";

    Properties props = System.getProperties();
    props.put("mail.smtp.host", host);
    props.put("mail.smtp.user", username);
    props.put("mail.smtp.password", password);
    props.put("mail.smtp.port", "25"); // thish is the port recommended by authsmtp
    props.put("mail.smtp.auth", "false");

    Session session = Session.getDefaultInstance(props, null);
    MimeMessage message = new MimeMessage(session);
    message.setFrom(new InternetAddress(from));

    InternetAddress to_address = new InternetAddress(to);
    message.addRecipient(Message.RecipientType.TO, to_address);

    message.setSubject(msgSubject);
    message.setText(msgText);
    Transport transport = session.getTransport("smtp");
    transport.connect(host, username, password);
    transport.sendMessage(message, message.getAllRecipients());
    transport.close();
    return true;
}

这是错误堆栈跟踪：

javax.mail.AuthenticationFailedException: No authentication mechansims supported by both server and client

at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:590)

at javax.mail.Service.connect(Service.java:291)

at javax.mail.Service.connect(Service.java:172)

at javax.mail.Service$connect.call(Unknown Source)

at org.helpdesk.MymailService.sendMessage(MymailService.groovy:37)

at org.helpdesk.MymailService$sendMessage.call(Unknown Source)

at org.helpdesk.RequestController$_closure13.doCall(RequestController.groovy:247)

at org.helpdesk.RequestController$_closure13.doCall(RequestController.groovy)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

我已经阅读了几十个帖子，考虑到这样的问题，但我仍然无法解决问题。任何帮助表示赞赏。

*编辑：*如果没有身份验证，是否可能在使用带有Exchange服务器SMTP的javaMail发送邮件时出现问题？

答案

如果您尝试在未经身份验证的情况下连接到邮件服务器，请调用不带用户名和密码的connect方法。如果您传递用户名和密码，它认为您确实要进行身份验证，并且由于无法找到服务器支持的身份验证机制，因此无法进行身份验证。

另一答案

在我的情况下，我不得不设置属性

"mail.smtp.ehlo"

到"false"

（除了添加将属性"mail.smtp.auth"设置为"false"，然而根据this link，这似乎是默认值）

在将"mail.smtp.ehlo"设置为"false"之前，我看到了以下调试输出（通过将属性"mail.debug"设置为"true"来启用）：

DEBUG SMTP: Attempt to authenticate using mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM 
DEBUG SMTP: mechanism LOGIN not supported by server
DEBUG SMTP: mechanism PLAIN not supported by server
DEBUG SMTP: mechanism DIGEST-MD5 not supported by server
DEBUG SMTP: mechanism NTLM not supported by server

然后获得相同的javax.mail.AuthenticationFailedException。

（在这种情况下，SMTP服务器是Microsoft的）

另一答案

好吧，看起来我几乎没有问题。起初，Exchange未正确设置。然后我似乎尝试了所有可能的配置，但是正确的配置。这有效：

class MymailService 
{
    boolean transactional = false

    public sendMessage(String to, String cc, String msgSubject, String msgText) 
    {
        String host = "mail.mailserver.com";
        String username = "[e-mail]"; 
        String password = "xxx"; 
        String from = "[e-mail]";
        String port = "25";

        Properties props = System.getProperties();
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.port", port); 
        props.put("mail.smtp.auth", "false");

        Transport transport = null;

        try{
            Session session = Session.getDefaultInstance(props, null);
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(from));

        InternetAddress to_address = new InternetAddress(to);
        message.addRecipient(Message.RecipientType.TO, to_address);

        InternetAddress cc_address = new InternetAddress(cc);
        message.addRecipient(Message.RecipientType.CC, cc_address);

        message.setSubject(msgSubject);
        message.setText(msgText);

        transport = session.getTransport("smtp");
        transport.connect();
        transport.sendMessage(message, message.getAllRecipients());
    } finally {
        if (transport != null) try { transport.close(); } catch (MessagingException logOrIgnore){}
    }
}
}

最后的线索是Bill Shannon的帖子。谢谢比尔！

另一答案

1. 检查您遇到的服务器是否要求进行身份验证。在代码中更多关于此。
2. 请在属性中放置mail.debug，以了解代码和邮件服务器之间究竟发生了什么。在代码中更多关于此。

这是一个简单的代码，适用于我公司的邮件服务器：

 package com.datereminder.service;

 import java.util.Properties;
 import javax.mail.Message;
 import javax.mail.MessagingException;
 import javax.mail.PasswordAuthentication;
 import javax.mail.Session;
 import javax.mail.Transport;
 import javax.mail.internet.InternetAddress;
 import javax.mail.internet.MimeMessage;

 public class ReminderDaemonService2 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Properties props = new Properties();
        props.put("mail.smtp.host", "mail.mycompany123.com");
 // this mandates authentication at the mailserver
        props.put("mail.smtp.auth", "true");
 // this is for printing debugs

        props.put("mail.debug", "true");

        Session session = Session.getDefaultInstance(props,
            new javax.mail.Authenticator() {
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("[e-mail]","xxxxxxxxxxx");
                }
            });

        try {

            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress("[e-mail]"));
            message.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse("[e-mail]"));
            message.setSubject("Testing Subject");
            message.setText("Dear Friend," +
                    "

 This is a Test mail!");

            Transport.send(message);

        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
    }
 }

另一答案

这是我的解决方案，也许这不是最好的方式，但它对我有用......

在mail-config.xml中：

<bean id="mailSender" class="com.xxx.service.MailSender">
    <property name="host" value="${mail.host}" />
    <property name="port" value="${mail.port}" />
    <property name="protocol" value="${mail.protocol}" />
    <property name="defaultEncoding" value="UTF-8" />
    <property name="authRequired" value="${mail.auth}" />
    <property name="username" value="${mail.username}" />
    <property name="password" value="${mail.password}" />
    <property name="javaMailProperties">
        <props>
            <prop key="mail.smtps.auth">${mail.auth}</prop>
        </props>
    </property>
</bean>

这是设置：

mail.from=XXX Team <[e-mail]>
mail.host=exchange.xxx.com
mail.port=25
mail.protocol=smtp
mail.auth=false
mail.username=
mail.password=

最后，代码：

package com.xxx.service;
import org.springframework.mail.javamail.JavaMailSenderImpl;

public class MailSender extends JavaMailSenderImpl {

    private boolean authRequired;

    @Override
    public String getUsername() {
        if (!authRequired) {
            return null;
        }
        return super.getUsername();
    }

    @Override
    public String getPassword() {
        if (!authRequired) {
            return null;
        }
        return super.getPassword();
    }

    public boolean isAuthRequired() {
        return authRequired;
    }

    public void setAuthRequired(boolean authRequired) {
        this.authRequired = authRequired;
    }

}

另一答案

如果您希望您的应用程序登录到SMTP服务器（因为您提供身份验证详细信息）。只是改变

props.put("mail.smtp.auth", false); 

至

props.put("mail.smtp.auth", true);