Today, I have upgraded to ZABBIX to version 1.4.2. After restarting the ZABBIX server, I got for all hosts implementing the trigger an OFF and then an ON message. So about 200 emails. Lucky, that I had renamed the script for sending SMS
It's clear to me, that the ZABBIX server has been down for more then 240s. Because of this, no data has been colleted within the last 240s and it has sent the messages.
Now, how I should extend the trigger to prevent this ? Using "system.uptime" from the ZABBIX server doesn't help when upgrading without restarting the whole server.
Any ideas ?