10620EventSentryNo event matching filter Backup OK has occurred in the event log in the configured time period. According to the schedule, at least one event matching filter Backup OK should have been logged during the last 420 minutes.
This event is logged by EventSentry because a recurring filter "Backup OK" did not detect the configured events during the configured time period.
Recurring event filters check whether events appear as expected during configured time periods (e.g. successful backup events, AntiVirus update events).
This feature is configured at "Packages -> Filter Packages -> Package Name -> Filter Name -> Day / Hour -> Schedule Type".