com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1; nested exception is: java.net.ConnectException: Connection refused: connect

blogspot.com | 3 days ago
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  1. 0

    How to Fix java.net.ConnectException: Connection refused: connect in Java

    blogspot.com | 3 days ago
    com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1; nested exception is: java.net.ConnectException: Connection refused: connect
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    Java mail - Couldn't connect to host

    Stack Overflow | 2 years ago | Sarpy
    com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1; nested exception is:
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    Unable to send email from java, via postfix on macOS 10.12 (sierra)

    Stack Overflow | 5 months ago | slycrel
    com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1; nested exception is: java.net.ConnectException: Connection refused
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  5. 0

    Java mail has connection errors

    Stack Overflow | 4 months ago | dmbdnr
    com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1; nested exception is: java.net.ConnectException: Connection refused (Connection refused)
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    How to send gmail out in Java when port 587 is blocked?

    Stack Overflow | 3 months ago | Nbattula
    java.lang.RuntimeException: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 587; timeout -1; nested exception is: java.net.ConnectException: Connection timed out: connect
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Root Cause Analysis

  1. java.net.ConnectException

    Connection refused: connect

    at java.net.DualStackPlainSocketImpl.connect0()
  2. Java RT
    Socket.connect
    1. java.net.DualStackPlainSocketImpl.connect0(Native Method)
    2. java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
    3. java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
    4. java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
    5. java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
    6. java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    7. java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    8. java.net.Socket.connect(Socket.java:579)
    9. java.net.Socket.connect(Socket.java:528)
    9 frames
  3. JavaMail API (compat)
    SMTPTransport.protocolConnect
    1. com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:301)
    2. com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:229)
    3. com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1950)
    4. com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:656)
    4 frames
  4. JavaMail API
    Transport.send
    1. javax.mail.Service.connect(Service.java:345)
    2. javax.mail.Service.connect(Service.java:226)
    3. javax.mail.Service.connect(Service.java:175)
    4. javax.mail.Transport.send0(Transport.java:253)
    5. javax.mail.Transport.send(Transport.java:124)
    5 frames
  5. Unknown
    Testing.main
    1. Testing.main(Testing.java:62)
    1 frame