When a group is downtimed and transitions from OK to one of a ALERT, WARNING, or NO DATA state, this event is suppressed from notifying you. When this downtime ends or is cancelled, this allows both re-notify events (if configured) and recovery events to then be sent.

An option is to resolve the monitor prior to cancelling the downtime to suppress recovery notifications. However, any groups that were in a non-OK state could switch back to their previous state, resulting in another notification.

Additional helpful documentation, links, and articles:

Learn how to create a monitorDOCUMENTATION Configure your monitor notificationsDOCUMENTATION Learn more about downtimesDOCUMENTATION