嘗試通過Java以SMTP方式發送電子郵件，但得到錯誤「AUTH LOGIN失敗」

Question

過去幾天，我一直對我的桌子猛撞我的頭，試圖弄清楚爲什麼當我不斷收到以下錯誤試圖實現Java代碼通過我公司的Outlook服務器發送電子郵件：

DEBUG SMTP: Attempt to authenticate using mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM XOAUTH2 
DEBUG SMTP: Using mechanism LOGIN 
DEBUG SMTP: AUTH LOGIN command trace suppressed 
DEBUG SMTP: AUTH LOGIN failed 
Exception in thread "main" javax.mail.AuthenticationFailedException: 535 5.7.0 authentication failed 
    at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:932) 
    at com.sun.mail.smtp.SMTPTransport.authenticate(SMTPTransport.java:843) 
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:748) 
    at javax.mail.Service.connect(Service.java:388) 
    at javax.mail.Service.connect(Service.java:246) 
    at javax.mail.Service.connect(Service.java:195) 
    at javax.mail.Transport.send0(Transport.java:254) 
    at javax.mail.Transport.send(Transport.java:124) 

這裏是有問題的代碼：

import java.util.*; 
import javax.mail.*; 
import javax.mail.internet.*; 
import javax.activation.*; 

public class SendEmail3 { 

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

     Login e = new Login(); 

     String host = "mail.authsmtp.com"; 
     String port = "465"; 
     final String userName = e.getEmailUser(); 
     final String password = e.getEmailPassword(); 
     String toAddress = "first.last@email"; 
     String subject = "TEST"; 
     String message = "This is a test email"; 

     // sets SMTP server properties 
     Properties properties = new Properties(); 
     properties.put("mail.smtp.host", host); 
     properties.put("mail.smtp.port", port); 
     properties.put("mail.smtp.auth", "true"); 
     properties.put("mail.debug", "true"); 
     // properties.put("mail.smtp.starttls.enable", "true"); 
     properties.put("mail.smtp.ssl.enable", "true"); 
     properties.put("mail.user", userName); 
     properties.put("mail.password", password); 

     // creates a new session with an authenticator 
     Authenticator auth = new Authenticator() { 
      public PasswordAuthentication getPasswordAuthentication() { 
       return new PasswordAuthentication(userName, password); 
      } 
     }; 
     Session session = Session.getInstance(properties, auth); 

     // creates a new e-mail message 
     Message msg = new MimeMessage(session); 

     msg.setFrom(new InternetAddress(userName)); 
     InternetAddress[] toAddresses = { new InternetAddress(toAddress) }; 
     msg.setRecipients(Message.RecipientType.TO, toAddresses); 
     msg.setSubject(subject); 
     msg.setSentDate(new Date()); 

     // creates message part 
     MimeBodyPart messageBodyPart = new MimeBodyPart(); 
     messageBodyPart.setContent(message, "text/html"); 

     // creates multi-part 
     Multipart multipart = new MimeMultipart(); 
     multipart.addBodyPart(messageBodyPart); 

     // sets the multi-part as e-mail's content 
     msg.setContent(multipart); 

     // sends the e-mail 
     Transport.send(msg); 

    } 

} 

錯誤處被觸發Transport.send（MSG）。任何指導將不勝感激。

Answer 1

535代碼代表錯誤的用戶名或密碼。

通過調試此代碼，確保您的電子郵件用戶名和密碼正確無誤。

另一個提示是通過網絡登錄郵件或嘗試將密碼更改爲郵件。

Answer 2

你需要訪問https://myaccount.google.com，去安全，並改變訪問不太安全的app.gmail.smtp需要最新版本自動化這就是爲什麼它沒有工作。