if we got a production issue like share storage issue, so many virtual machines were having issues and the zabbix server also was having issue.

After a few hours later, storage issue resolved. The zabbix is coming to normal. It sends so many alerts which were a few hours ago and also so many recovery messages.

I know probably it is by design and if there is an option feature to not send the alerts/recovery message belongs a few hours ago or before the outage.