com.sun.mail.smtp.SMTPSendFailedException: 530 5.7.0 Must issue a STARTTLS command first. b23sm8262698ugd.64

igniterealtime.org | 8 months ago
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Root Cause Analysis

  1. com.sun.mail.smtp.SMTPSendFailedException

    530 5.7.0 Must issue a STARTTLS command first. b23sm8262698ugd.64

    at com.sun.mail.smtp.SMTPTransport.issueSendCommand()
  2. JavaMail API (compat)
    SMTPTransport.sendMessage
    1. com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:1515)
    2. com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1054)
    3. com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:634)
    3 frames