SSL error doesn't trigger ClientLostConnection

[bendem]

[01:04:09,182] [INFO] [Cb-Cleaner] Failed to receive PONG (-984139185267869307)response in time, disconnecting from server Esper
[01:04:09,182] [INFO] [Cb-Cleaner] Disconnecting from irc.esper.net:6697...
[01:04:14,287] [INFO] [Cb-Cleaner] Successfully disconnected from irc.esper.net:6697
[01:04:19,288] [INFO] [pool-1-thread-43] Connecting to irc.esper.net:6697...
[01:04:39,314] [ERROR] [pool-1-thread-43] Failed to connect to Server
javax.net.ssl.SSLException: Failed to create SSL socket
        at fr.ribesg.alix.internal.network.ssl.SSLSocketFactory.getTrustingSSLSocket(SSLSocketFactory.java:69)
        at fr.ribesg.alix.internal.network.SocketHandler.connect(SocketHandler.java:63)
        at fr.ribesg.alix.api.Server.connect(Server.java:399)
        at be.bendem.bendembot.BotHandler.lambda$onConnectionLost$19(BotHandler.java:101)
        at be.bendem.bendembot.BotHandler$$Lambda$38/9414742.run(Unknown Source)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException: irc.esper.net
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:649)
        at sun.security.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:409)
        at sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:88)
        at fr.ribesg.alix.internal.network.ssl.SSLSocketFactory.getTrustingSSLSocket(SSLSocketFactory.java:55)
        ... 9 more