Smack 4.1 failing in tcp handshaking with aws server

I am getting no response from server, whille trying to connect to AWS, where we have deployed Ejabbered. W/System.err(13103): org.jivesoftware.smack.SmackException$NoResponseException: No response received within reply timeout. Timeout was 10000ms (~10s). Used filter: No filter used or filter was 'null'. W/System.err(13103): at org.jivesoftware.smack.SynchronizationPoint.checkForResponse(SynchronizationPoint.java:192) W/System.err(13103): at org.jivesoftware.smack.SynchronizationPoint.checkIfSuccessOrWait(SynchronizationPoint.java:114) W/System.err(13103): at org.jivesoftware.smack.SynchronizationPoint.checkIfSuccessOrWaitOrThrow(SynchronizationPoint.java:97) W/System.err(13103): at org.jivesoftware.smack.tcp.XMPPTCPConnection.connectInternal(XMPPTCPConnection.java:837) W/System.err(13103): at org.jivesoftware.smack.AbstractXMPPConnection.connect(AbstractXMPPConnection.java:360) W/System.err(13103): at com.snapdeal.chat.service.XmppService$2.run(XmppService.java:228)