java.lang.RuntimeException: com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.1 Authentication required

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com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.1 Authentication required
java.lang.RuntimeException: com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.1 Authentication required
at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2108)
at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1609)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1117)
at javax.mail.Transport.send0(Transport.java:195)
at javax.mail.Transport.send(Transport.java:124)
at undefined.Mail.main(Mail.java:119)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)

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