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Samebug tips

  1. ,
    Expert tip

    Check if ip adress is correct, if the port is correct, and if the server is up and running and waiting for connections. Also, check if there's no firewall blocking you and if your internet connection is working.

  2. ,
    Expert tip

    Check if your server (or a proxy server) is not going up and down. There might be something between a proxy and a client sending intermittent requests to non-functioning hosts as well. There might as well be too many requests in a short amount of time.

Solutions on the web

via Stack Overflow by Aryak Pande
, 1 year ago
Could not connect to SMTP host: smtp.gmail.com, port: 465; nested exception is: java.net.SocketException: Broken pipe
via Oracle Community by 843840, 1 month ago
Could not connect to SMTP host: smtp.gmail.com, port: 25; nested exception is: java.net.SocketException: Software caused connection abort: connect
via Coderanch by Jawed Nazar Ali, 1 year ago
Could not connect to SMTP host: mail.sdfpak.org, port: 25; nested exception is: java.net.ConnectException: Connection refused
via Coderanch by ravi v kumar, 1 year ago
Could not connect to SMTP host: 10.45.26.62, port: 25; nested exception is: java.net.SocketException: Software caused connection abort: connect
via Coderanch by Mannu Pal, 1 year ago
Could not connect to SMTP host: smtp.gmail.com, port: 465, response: -1
via Google Groups by Damian Marinaccio, 9 months ago
Unknown SMTP host: smtp.niper.ac.in; nested exception is: java.net.UnknownHostException: smtp.niper.ac.in
java.net.ConnectException: Connection timed out: connect	at java.net.DualStackPlainSocketImpl.connect0(Native Method)	at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)	at java.net.Socket.connect(Socket.java:579)	at java.net.Socket.connect(Socket.java:528)	at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:284)	at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:227)	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1672)