We have a logfile monitoring on few hosts that are running Zabbix agent 2.2.1 and 2.2.3. Some of them are reporting to Zabbix server 2.2.1 and 3.2.3 (we currently have two Zabbix server version running in our environment). On some hosts the logfile is missing but we still getting latest data for that logfile monitoring but the data we are receiving is blank and we are getting alerted for it. After some investigation I figured out that this is happening only with hosts that are running Zabbix agent 2.2.1 and which are reporting to Zabbix server 3.2.3. Is there any kind of compatibility issues with Zabbix agent 2.2.1 and Zabbix server 3.2.3.? Any help would be appreciated.