java Outlook 发送邮件

Question

我尝试通过 Outlook 发送邮件，但出现如下错误。

package test.first.javamail;

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class SendAttachmentInEmail {
    public static void main(String[] args) {
        // Recipient's email ID needs to be mentioned.
        // String to = "sagapawar1234@gmail.com";

        // Sender's email ID needs to be mentioned
        String from = "abcd@outlook.com";
        final String password = "*****";// change accordingly

        // Check how many arguments were passed in
        if (args.length == 0) {
            System.out.println("Please run Sendmail jar as: java -jar SendMail.jar <recivers@gmail.com> <path of attachment file>");
            System.exit(0);
        }

        String to = args[0];
        String attachment_path = args[1];
        final String username = from;
        ;// change accordingly

        System.out.println("Trying to send mail to : " + to + "\n");
        // final String username = "abcd";// change accordingly
        // final String password = "******";// change accordingly
        System.out.println("Please wait for a moment, we are checking creadentials...! \n");
        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
//      props.put("mail.smtp.host", "smtp.gmail.com");smtp.office365.com
        props.put("mail.smtp.host", "smtp.office365.com");
        props.put("mail.smtp.port", "587");
//      props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
//      props.put("mail.smtp.socketFactory.fallback", "true");

        // Get the Session object.
        Session session = Session.getInstance(props,
                new javax.mail.Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication(username, password);
                    }
                });
        System.out.println("Seat tight your identity has been proved and mail is just on the way...! ");
        try {
            // Create a default MimeMessage object.
            Message message = new MimeMessage(session);

            // Set From: header field of the header.
            message.setFrom(new InternetAddress(from));

            // Set To: header field of the header.
            message.setRecipients(Message.RecipientType.TO,
                    InternetAddress.parse(to));

            // Set Subject: header field
            message.setSubject("Testing Subject");

            // Create the message part
            BodyPart messageBodyPart = new MimeBodyPart();

            // Now set the actual message
            messageBodyPart.setText("This is message body");

            // Create a multipar message
            Multipart multipart = new MimeMultipart();

            // Set text message part
            multipart.addBodyPart(messageBodyPart);

            // Part two is attachment
            messageBodyPart = new MimeBodyPart();
            String filename = attachment_path;// "C:/Users/swapnil.kotwal/Desktop/buildsuccess.txt";Azure.png
            DataSource source = new FileDataSource(filename);
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName(filename);
            multipart.addBodyPart(messageBodyPart);

            // Send the complete message parts
            message.setContent(multipart);

            // Send message
            Transport.send(message);

            System.out.println("Sent message successfully....");

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

错误是

Exception in thread "main" java.lang.RuntimeException: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.office365.com, 587; timeout -1;
      nested exception is:
            java.net.ConnectException: Connection timed out: connect
            at test.first.javamail.SendAttachmentInEmail.main(SendAttachmentInEmail.java:104)
    Caused by: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.office365.com, 587; timeout -1;
      nested exception is:
            java.net.ConnectException: Connection timed out: connect
            at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2100)
            at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:699)
            at javax.mail.Service.connect(Service.java:367)
            at javax.mail.Service.connect(Service.java:226)
            at javax.mail.Service.connect(Service.java:175)
            at javax.mail.Transport.send0(Transport.java:253)
            at javax.mail.Transport.send(Transport.java:124)
            at test.first.javamail.SendAttachmentInEmail.main(SendAttachmentInEmail.java:99)
    Caused by: java.net.ConnectException: Connection timed out: connect
            at java.net.DualStackPlainSocketImpl.connect0(Native Method)
            at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
            at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
            at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
            at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
            at java.net.PlainSocketImpl.connect(Unknown Source)
            at java.net.SocksSocketImpl.connect(Unknown Source)
            at java.net.Socket.connect(Unknown Source)
            at java.net.Socket.connect(Unknown Source)
            at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:331)
            at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:238)
            at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2066)

我相信代码是正确的，但不确定到底是什么阻止了邮件传递？任何帮助将不胜感激。

Answer 1

基于

 java.net.ConnectException: Connection timed out: connect
            at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2100)
            at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:699)

我认为你需要检查一些事情

• SMTP 服务器应该合适
• 某些组织已阻止 587 端口号，请与您的 IT 团队核实该端口是否开放以与给定 SMTP 进行通信 服务器

如果您获得适当的开放端口，问题应该会得到解决。

基本上处理这个属性

        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");
//      props.put("mail.smtp.host", "smtp.gmail.com");smtp.office365.com
        props.put("mail.smtp.host", "smtp.office365.com");
        props.put("mail.smtp.port", "587"); //change this port

如果您的组织有任何与代理相关的设置，您也可以引用此答案 https://stackoverflow.com/a/12097764/1665592