javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port:25; nested exception is: java.net.ConnectException: Connection timed out: connect

java-samples.com | 4 months ago
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Root Cause Analysis

  1. javax.mail.MessagingException

    Could not connect to SMTP host: smtp.gmail.com, port:25; nested exception is: java.net.ConnectException: Connection timed out: connect

    at com.sun.mail.smtp.SMTPTransport.openServer()
  2. JavaMail API (compat)
    SMTPTransport.protocolConnect
    1. com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1706)
    2. com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:525)
    2 frames
  3. JavaMail API
    Transport.send
    1. javax.mail.Service.connect(Service.java:313)
    2. javax.mail.Service.connect(Service.java:172)
    3. javax.mail.Service.connect(Service.java:121)
    4. javax.mail.Transport.send0(Transport.java:190)
    5. javax.mail.Transport.send(Transport.java:120)
    5 frames