Zabbix stop sending email notification to the hosts that we are monitoring. We checked the status of the zabbix and all is working same with backend zabbix agent and zabbix server is running.
Restarted the server and proxy to ensure that there was no glitch the frontend is still running after the restart. After further monitoring we started to monitor that the email notification started to show failures.
Restarted the server and proxy to ensure that there was no glitch the frontend is still running after the restart. After further monitoring we started to monitor that the email notification started to show failures.