Solve error javax mail AuthenticationFailedException

Question

I m not familiar with this function to send mail in java  I m getting an error while sending email to reset a password  Hope you can give me a solution   Below is my code   public synchronized static boolean sendMailAdvance String emailTo  String subject  String body        String host   AppConfigManager getProperty  SENDER-EMAIL-SMTP-ADDRESS        String userName   AppConfigManager getProperty  SENDER-EMAIL-SMTP-USERNAME        String password   AppConfigManager getProperty  SENDER-EMAIL-SMTP-PASSWORD        String port   AppConfigManager getProperty  SENDER-EMAIL-SMTP-PORT        String starttls   AppConfigManager getProperty  SENDER-EMAIL-SMTP-STARTTLS        String socketFactoryClass   AppConfigManager getProperty  SENDER-EMAIL-SMTP-SOCKET-CLASS        String fallback   AppConfigManager getProperty  SENDER-EMAIL-SMTP-ALLOW-FALLBACK                                  try               java util Properties props   null          props   System getProperties            props put  mail smtp user   userName           props put  mail smtp host   host           props put  mail smtp auth    true            props put  mail smtp debug    true             if     equals port                         props put  mail smtp port   port               props put  mail smtp socketFactory port   port                      if     equals starttls               props put  mail smtp starttls enable  starttls            if     equals socketFactoryClass                                  props put  mail smtp socketFactory class  socketFactoryClass            if     equals fallback               props put  mail smtp socketFactory fallback   fallback            Session session   Session getDefaultInstance props  null           session setDebug true            MimeMessage msg   new MimeMessage session           msg setFrom new InternetAddress userName            msg setSubject subject                           msg setText body   ISO-8859-1            msg setSentDate new Date             msg setHeader  content-Type    text html charset   ISO-8859-1              msg addRecipient Message RecipientType TO  new InternetAddress emailTo            msg saveChanges             Transport transport   session getTransport  smtp            transport connect host  userName  password           transport sendMessage msg  msg getAllRecipients             transport close                return true            catch  Exception mex                mex printStackTrace            return false            Throws the following error      DEBUG  setDebug  JavaMail version 1 4 1ea-SNAPSHOT  DEBUG  getProvider   returning   javax mail Provider TRANSPORT smtp com sun mail smtp SMTPTransport Sun Microsystems  Inc        DEBUG SMTP  useEhlo true  useAuth true      DEBUG SMTP  trying to connect to host  smtp gmail com   port 465  isSSL false 220 mx google com ESMTP m4sm5929870pbg 38 - gsmtp      DEBUG SMTP  connected to host  smtp gmail com   port  465      EHLO fatin      250-mx google com at your service   175 139 198 14       250-SIZE 35882577      250-8BITMIME      250-AUTH LOGIN PLAIN XOAUTH XOAUTH2 PLAIN-CLIENTTOKEN      250-ENHANCEDSTATUSCODES      250 CHUNKING      DEBUG SMTP  Found extension  SIZE   arg  35882577       DEBUG SMTP  Found extension  8BITMIME   arg         DEBUG SMTP  Found extension  AUTH   arg  LOGIN PLAIN XOAUTH XOAUTH2 PLAIN-CLIENTTOKEN       DEBUG SMTP  Found extension  ENHANCEDSTATUSCODES   arg         DEBUG SMTP  Found extension  CHUNKING   arg         DEBUG SMTP  Attempt to authenticate      AUTH LOGIN      334 VXNlcm5hbWU6      YWNjb3VudEBibG9vbWluZy5jb20ubXk       334 UGFzc3dvcmQ6      Ymxvb21pbmc    535-5 7 8 Username and Password not accepted  Learn more at   535 5 7 8 http   support google com mail bin answer py answer 14257      m4sm5929870pbg 38 - gsmtp       STDOUT  javax mail AuthenticationFailedException       STDOUT  at javax mail Service connect Service java 319        STDOUT  at javax mail Service connect Service java 169        STDOUT  at com vlee util mail SendMail sendMailAdvance SendMail java 283        STDOUT  at com vlee servlet ecommerce DoMemberLogin fnSendPwd DoMemberLogin java 251        STDOUT  at com vlee servlet ecommerce DoMemberLogin doPost DoMemberLogin java 72

User · Answer

Just in case anyone comes looking a solution for this problem.

The Authentication problems can be alleviated by activating the google 2-step verification for the account in use and creating an app specific password. I had the same problem as the OP. Enabling 2-step worked.

User · Answer

2 possible reasons    Your username may require the entire email id  username example com  Most obvious  The password is wrong  Debug to see if the password being used is correct

User · Answer

The solution that works for me has two steps    First step  package com student mail   import java util Properties   import javax mail Authenticator  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              author jorge santos     public class GoogleMail       public static void main String   args            Properties props   new Properties            props put  mail smtp host    smtp gmail com            props put  mail smtp socketFactory port    465            props put  mail smtp socketFactory class                javax net ssl SSLSocketFactory            props put  mail smtp auth    true            props put  mail smtp port    465             Session session   Session getDefaultInstance props          new javax mail Authenticator                                  Override             protected PasswordAuthentication getPasswordAuthentication                     return new PasswordAuthentication  conaderindicadores gmail com   Silueta95                                    try            Message message   new MimeMessage session           message setFrom new InternetAddress  conaderindicadores gmail com             message setRecipients Message RecipientType TO                  InternetAddress parse  netneillip gmail com             message setSubject  Testing Subject            message setText  Test Mail             Transport send message            System out println  Done           catch  MessagingException e            throw new RuntimeException e               Enable the gmail security  https   myaccount google com u 2 lesssecureapps pli 1 amp pageId none

User · Answer

trying to connect to host  smtp gmail com   port 465  isSSL false   You got your gmail smtp setting wrong  Gmail requires SSL  Please see tutorials on how to send email via Java via Gmail SMTP  eg  http   www mkyong com java javamail-api-sending-email-via-gmail-smtp-example

User · Answer

import java util    import javax mail    import javax mail internet    import javax activation     public class SendMail1        public static void main String   args               Recipient s email ID needs to be mentioned            String to    valid email to address                 Sender s email ID needs to be mentioned           String from    valid email from address                  Get system properties           Properties properties   System getProperties               properties put  mail smtp starttls enable    true               properties put  mail smtp host    smtp gmail com               properties put  mail smtp port    587              properties put  mail smtp auth    true              Authenticator authenticator   new Authenticator                      public PasswordAuthentication getPasswordAuthentication                        return new PasswordAuthentication  userid   password     userid and password for  from  email address                                                Session session   Session getDefaultInstance  properties   authenticator               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  This is the Subject Line                      Now set the actual message              message setText  This is actual message                     Send message              Transport send message                System out println  Sent message successfully                   catch  MessagingException mex                 mex printStackTrace

User · Answer

Most of AuthenticationFieldException Error occur when sign-in attempted prevented  login your gmail first and go to https   www google com settings security lesssecureapps  and check turn on      I solved this kind of problem like this way

User · Answer

There are a few steps you have to keep in mind   First  make sure you have turned off 2-way authentication of google account Second  allow access for less secure apps- https   myaccount google com lesssecureapps  Now there are two scenarios If you are developing it in your local machine login to your google account in your browser  this way the google recognizes the machine  If you have deployed the application onto a server then after the first request you will get an authentication error  so you have to give access to the server  just go here to give access- https   www google com accounts DisplayUnlockCaptcha

User · Answer

If you are logging in to your gmail account from a new application or device  Google might be blocking that device  Try following these steps   To protect your account  Google might make it harder to sign in to your account if we suspect it isn   t you  For example  Google might ask for additional information besides your username and password if you are traveling or if you try to sign in to your account from a new device   Go to https   g co allowaccess from a different device you have previously used to access your Google account and follow the instructions  Try signing in again from the blocked app

User · Answer

May be this problem cause by Gmail account protection  Just click below link and disable security settings It will work   https   www google com settings security lesssecureapps

User · Answer

You should change the port to 587  I tested your code and it s working fine  If error still happens  please change session variable to code below   Session session   Session getInstance props  new javax mail Authenticator         protected PasswordAuthentication getPasswordAuthentication             return new PasswordAuthentication userName  password

User · Answer

https   www google com settings security lesssecureapps go to your account and turn on the security it will work

User · Answer

By default Gmail account is highly secured  When we use gmail smtp from non gmail tool  email is blocked   To test in our local environment  make your gmail account less secure as   Login to Gmail   Access the URL as https   www google com settings security lesssecureapps  Select  Turn on

User · Answer

I had this issue as well but the solution had nothing to do with coding   Make sure you are able to connect to gmail   Ping smtp gmail com   If you don t get a reply check your firewall settings   It could also be a proxy setting issue

User · Answer

I have been getting the same error for long time    When i changed session debug to true  Session session   Session getDefaultInstance props  new GMailAuthenticator  xxxxx gmail com    xxxxx     session setDebug true     I got help url https   support google com mail answer 78754 from console along with javax mail AuthenticationFailedException   From the steps in the link  I followed each steps  When I changed my password with mix of letters  numbers  and symbols to be my surprise the email was generated without authentication exception   Note  My old password was more less secure

User · Answer

Change this  set less secure app   https   www google com settings security lesssecureapps

[java] Solve error javax.mail.AuthenticationFailedException

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