javax.mail.sendfailedexception：發送失敗;嵌套的例外情況是：類javax.mail.authenticationfailedexception在發送

Question

我是新來的Java郵件，我想發送帶附件的郵件，所以我想創建一個從網上樣本代碼的測試郵件，但我得到

javax.mail.sendfailedexception: sending failed; 
nested exception is: class javax.mail.authenticationfailedexception 
at javax.mail.transport.send0(Transport.java.218) 
at javax.mail.transport.send(Transport.java.80) 

我試着用不同的身份驗證，但我失敗了

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

public class SendEmail 
{ 
    public static void main(String [] args) 
    { 

     // Recipient's email ID needs to be mentioned. 
     String to = "hari@gmail.com"; 

     // Sender's email My Office mail server 
     String from = "hari8750@access.co.in"; 
     String pass = "Password"; 
     String host = "172.23.5.10"; 
     String port = "25"; 

     // Get system properties 
     Properties properties = System.getProperties(); 

     // Setup mail server 
     properties.setProperty("mail.smtp.host", host); 
     properties.setProperty("mail.smtp.port", port); 
     properties.setProperty("mail.smtp.auth", "true"); 

     // Get the default Session object. 
     Session session = Session.getInstance(properties,new MailAuthentication(from,pass)); 

     try{ 
     // Create a default MimeMessage object. 
     MimeMessage message = new MimeMessage(session); 

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

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

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

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

     // Fill the message 
     messageBodyPart.setText("Test Mail Success Hari"); 

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

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

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

     // Send message 
     Transport.send(message); 
     System.out.println("Sent message successfully...."); 
     }catch (MessagingException mex) { 
     mex.printStackTrace(); 
     } 
    } 
} 

import javax.mail.* 
public class MailAuthentication extends Authentication 
{ 

    String _user; 
    String _pass; 
    public GMailAuthenticator (String username, String password) 
    { 
     super(); 
     this._user = username; 
     this._pass = password; 
    } 
    public PasswordAuthentication getPasswordAuthentication() 
    { 
     return new PasswordAuthentication(_user, _pass); 
    } 
} 

我也試圖與

Session session = Session.getInstance(props, 
      new javax.mail.Authenticator() { 
      protected PasswordAuthentication getPasswordAuthentication() { 
       return new PasswordAuthentication(username, password); 
      } 
      }); 

的d

Session session = Session.getDefaultInstance(properties); 

和

Session session = Session.getDefaultInstance(properties); 

，但我得到了同樣的錯誤。

請幫我解決了這一點

我使用Windows PC像java環境變量是否有SMTP任何措施？

在此先感謝。

Answer 1

您必須添加mail.smtp.ssl和mail.smtp.sender.address屬性。 mail.smtp.sender.address與from屬性相同。 必須work..it按預期工作對我來說.. 希望它可以幫助

如果不解決您的問題，只是分享所造成的異常堆棧跟蹤..

Answer 2

您可以切換到Gmail等Google的應用程序訪問您的帳戶（推薦）或更改您的settings，以便您的account is no longer protected by modern security standards。