java.net.UnknownHostException: smtp.gmail.com

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    SMTP Setup - Wiki

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Root Cause Analysis

  1. java.net.UnknownHostException

    smtp.gmail.com

    at java.net.PlainSocketImpl.connect()
  2. Java RT
    Socket.connect
    1. java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
    2. java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    3. java.net.Socket.connect(Socket.java:529)
    3 frames
  3. Java JSSE
    SSLSocketImpl.connect
    1. com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:550)
    1 frame