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PRTG Manual: Notifying
PRTG keeps the administrator or others informed about the current status of the network. There are several methods how the administrator can stay up to date.
This is the most powerful information tool. Whenever PRTG discovers downtime, an overloaded system, threshold breach, or similar situations, it can send a notification. Notifications use various methods by which you can be notified (e.g. email, SMS, pager message and others). After creating notifications in the system settings, you can select them on the setting pages for a group, a device, and a sensor. See Notifications section for more details.
In a sensor channel's settings you can set limits to change the status of the sensor when certain limits are breached. This way, you can set e.g. a traffic sensor, which is typically never in a error status, to Down status whenever bandwidth values are measured that you consider critical. This sensor will then show up in the alarms list.
The alarm list shows all sensors that are currently in a Down , Down (Partial) , Warning , or Unusual status. This is useful to keep track of all irregularities in your network. In the table list, you can re-sort the items by clicking on the column's header items. See Alarms section for more details.
In the Log list, the log file with all monitoring events is shown. In a typical setup, a huge amount of data is produced here. As the activity of every single object is minuted, you can use this data to check exactly if your setup works as expected. See Logs section for more information.
The ToDos list shows items with important system information or action steps to take for the administrator. Every ToDo should be viewed and acknowledged. Per default, an email is sent to the administrator for every new ToDo that is created by the system. See ToDos section for more information.