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  1. ,
    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.

  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 Rory Ryan
, 1 year ago
Connection timed out: connect; nested exception is: java.net.ConnectException: Connection timed out: connect
via Stack Overflow by Marin
, 9 months ago
Connection timed out: connect; nested exception is: java.net.ConnectException: Connection timed out: connect
via Google Groups by Carl Rosenberger, 7 months ago
Connection refused: connect; nested exception is: java.net.ConnectException: Connection refused: connect
via Coderanch by P Chaudhari, 1 year ago
Unrecognized SSL message, plaintext connection?; nested exception is: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connecti on?
via Stack Overflow by rupal
, 8 months ago
A0 BAD Parse Error; nested exception is: com.sun.mail.iap.BadCommandException: A0 BAD Parse Error
via Coderanch by Andrew Vyas, 1 year ago
Connection timed out: connect; nested exception is: java.net.ConnectException: Connection timed out: connect
java.net.ConnectException: Connection timed out: connect	at java.net.DualStackPlainSocketImpl.connect0(Native Method)	at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)	at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)	at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)	at java.net.AbstractPlainSocketImpl.connect(Unknown Source)	at java.net.PlainSocketImpl.connect(Unknown Source)	at java.net.SocksSocketImpl.connect(Unknown Source)	at java.net.Socket.connect(Unknown Source)	at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)	at sun.security.ssl.BaseSSLSocketImpl.connect(Unknown Source)	at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:319)	at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:207)	at com.sun.mail.iap.Protocol.(Protocol.java:113)	at com.sun.mail.imap.protocol.IMAPProtocol.(IMAPProtocol.java:111)	at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:637)