Trigger if no data is reveiced in long time and server restarts

[shayani]

I need to check if a Zabbix Agent doesn't send data in 14 days. The expression agent.ping.nodata(14d) works fine IF the zabbix_server is not restarted.

If it does, the trigger won't work.

Is there a way to get the datetime of last received agent.ping and, if it is more than 14 days ago, trigger the alarm? Or any other clever solution?

Thanks