What is this IP and Port?
Any firewall in between server and collector?
"2017-01-06 04:36:35 WARNING [DefaultSessionManager] forcing socket close on all outbound connections for session 184.108.40.206:Tunnelled:Deflate:Collector
2017-01-06 04:36:35 INFO [Collector] Server[220.127.116.11:8033] has been disconnected - reconnecting in 15s
2017-01-06 04:36:35 INFO [DefaultSessionManager] successfully closed session 18.104.22.168:Tunnelled:Deflate:Collector
2017-01-06 04:36:50 INFO [Collector] connecting to server at '22.214.171.124:8033:TUNNELED'...
2017-01-06 04:44:34 WARNING [FastConnectionPool] connection Closed-126.96.36.199:8033:Outbound:Tunnelled:Deflate:751d1748-c11e-4db6-9563-76fba658883e was not in pool - unable to remove...
2017-01-06 04:44:34 WARNING [OutOfProcessEventHandler] Exception happened while trying to send buffer. Retry to send buffer...
2017-01-06 04:44:34 WARNING [OutOfProcessEventHandler] com.dynatrace.diagnostics.communication.tcp.exception.CommunicationException: class java.io.InterruptedIOException: Stream read timed out after 300000ms, while executing request: class com.dynatrace.diagnostics.collector.OutOfProcessEventHandler$SendBufferRequest"
I had gone through with all the logs and found "Collector. Another thread is currently creating such a connection!"
The similar issue has already been discussed on the community and support suggested them to upgrade the version.
I would say if you can open a support ticket to get their opinion.