title: Javamail 535 5.7.8 authentication failed
body: <p>I'm using javamail api to send mails.</p>
  
  <p>The following code has been working for about 5 months:</p>
  
  <pre><code>public static void sendMail(String dest, String oggetto, String testoEmail, String[] filePath) throws MessagingException{
      String sender2="mymail";
      String passSender2="mypass";
      String smpt2="smpt server";
      String port2="25";
      Properties props = new Properties();
      props.put("mail.smtp.port", port2);  //imposta la porta
      props.put("mail.smtp.host", smpt2);
      props.put("mail.smtps.auth", "true");
      props.put("mail.debug", "true");
      props.put("mail.smtp.starttls.enable","true");  //imposta la connessione cifrata
  
  
  
  
  
      Session session = Session.getDefaultInstance(props, null);
  
      MimeMessage message = getMessage(filePath, oggetto, session, testoEmail);
  
  
      InternetAddress fromAddress = new InternetAddress(sender2);
      InternetAddress toAddress = new InternetAddress(dest);
      message.setFrom(fromAddress);
      message.setRecipient(Message.RecipientType.TO, toAddress);
      Transport transport = session.getTransport("smtp");
      transport.connect(smpt2, 25, sender2, passSender2);
  
      transport.sendMessage(message, message.getAllRecipients());
      transport.close();
  }
  </code></pre>
  
  <p>But now i get this error:</p>
  
  <pre><code>535 5.7.8 Error: authentication failed: authentication failure
  </code></pre>
  
  <p>I tried to use </p>
  
  <pre><code>props.put("mail.smtp.auth.mechanisms", "VALUE" );
  </code></pre>
  
  <p>with Value="LOGIN" or value="PLAIN" or value="DIGEST-MD5" or value="CRAM-MD5" but nothing worked.
  I tried to send an email through the webmail and it worked, so my account is not closed, and my credentials are right.</p>
  
  <p>This is the debug trace:</p>
  
  <pre><code>DEBUG SMTP: useEhlo true, useAuth false
  DEBUG SMTP: trying to connect to host "smtserver", port 25, isSSL false
  220 smtserver ESMTP Postfix
  DEBUG SMTP: connected to host "smtserver", port: 25
  
  EHLO MYPC
  250-smtserver
  250-PIPELINING
  250-SIZE 102400000
  250-VRFY
  250-ETRN
  250-AUTH LOGIN PLAIN
  250-ENHANCEDSTATUSCODES
  250-8BITMIME
  250 DSN
  DEBUG SMTP: Found extension "PIPELINING", arg ""
  DEBUG SMTP: Found extension "SIZE", arg "102400000"
  DEBUG SMTP: Found extension "VRFY", arg ""
  DEBUG SMTP: Found extension "ETRN", arg ""
  DEBUG SMTP: Found extension "AUTH", arg "LOGIN PLAIN"
  DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg ""
  DEBUG SMTP: Found extension "8BITMIME", arg ""
  DEBUG SMTP: Found extension "DSN", arg ""
  DEBUG SMTP: Attempt to authenticate
  DEBUG SMTP: check mechanisms: LOGIN PLAIN DIGEST-MD5 NTLM 
  AUTH LOGIN
  334 VevergrgEDFEF6
  SC,OPVKDVEPOVKPOKPKPPK
  334 dvelvrevrevr
  WEFERFREFREFD
  535 5.7.8 Error: authentication failed: authentication failure
  </code></pre>
  
  <p>Do you have some ideas?</p>