I have defined a trigger for a host

{quimerix-test:room.temperature.last(0)}>35

And I am filling data to the server with zabbix_sender using timestamps for each event.

I want to simulate an environment where my agent don't send the data in real-time. It saves the data on a file and sends it to the server once a day for example.

The event triggers when "room.temperature.last >35"
If I send room.temperature = 32 with an arbitrary timestamp

$ echo quimerix-test room.temperature $(date --date "Jan 12 15:15:15 2011" +%s) 36 | zabbix_sender -z zabbix-server -T -i -

And then I send room.temperature = 40 with a timestamp in the past respect the previous one:

$ echo quimerix-test room.temperature $(date --date "Jan 12 12:12:12 2011" +%s) 36 | zabbix_sender -z zabbix-server -T -i -

The events gets triggered and it should not be the case, because the value with the newer timestamp is 32 despite the fact that 40 was received later.

In summary: triger.last should take the "timestamp" value of the data and ignore when it was received.