When are email notifications sent based on the configured alert thresholds?

Email notifications are sent when the alert checker identifies an issue, which involves monitoring various system metrics against predefined alert thresholds. This proactive approach is essential for administrators, as it enables them to respond quickly to potential problems that might impact the performance or stability of the system. The alert checker continuously monitors these metrics, and when it detects that a certain threshold has been exceeded or an anomaly occurs, it triggers an email notification to inform relevant stakeholders.

Understanding this mechanism is crucial for maintaining system health, as timely alerts can prevent downtime and other operational disruptions. Therefore, the emphasis is on the alert checker's capability to detect issues as they arise, making this option the correct choice in the context of alert notifications.