Why does Zabbix server not see clients behind Zabbix proxy?

Question

Zabbix

Colleagues, help out!
I've been struggling with a problem for two days, Zabbix server does not see agents located behind Zabbix proxy.
The Zabbix server itself is set up and running safely on AWS, monitors a number of my company's web resources.
My infrastructure is located behind a gateway, which is Kerio. I deployed Zabbix-proxy inside my infra in order to monitor the status of servers, etc. As a host - a virtual machine on Ubuntu server 14. I put an agent on the same virtual machine, I edit the configs. I add a proxy on the server, I see its availability. I add an agent, throw templates on him and silence, there is no data from the agent.
Agent logs:

1977:20180412:170220.780 no active checks on server [192.168.1.115:10051]: host [Zabbix-proxy] not found

Proxy logs:

1917:20180412:170420.860 cannot send list of active checks to "192.168.1.115": 
host [Zabbix-proxy] not found
  1898:20180412:170421.238 cannot send proxy data to server at "айпишник сервера": 
empty string received

Server logs:

24201:20180412:100654.290 unknown request received [proxy data]

Answer 1

Reinstalled the server and the agent on version 3.5 and everything grew together.

Answer 2

I have the same problem. Server 3.2, proxy 3.4 may be the reason. What server and proxy versions do you have?