67 Mail POP Redundancy Group

The Mail POP Redundancy Group target is a grouping of POP agent monitored targets that have identical configuration, characteristics, and functionality. While a single POP server instance is vulnerable to the failure of its host or system, a redundant group of POP servers continues to function despite the loss of a POP server instance, hiding any such failure from clients, and allowing other POP server instances in the group to service the requests.

67.1 Network

The Network category provides information about the connected POP clients, and the data transferred between POP clients and POP Server.

67.1.1 Data Received

This metric measures the amount of data received by the POP Server from the POP Clients. The value is the sum of all the data received by POP agent monitored targets.

Metric Summary

The following table shows how often the metric's value is collected.

Target Version	Evaluation and Collection Frequency
Version 1.0	Every 15 minutes

67.1.2 Data Transmitted

This metric measures the amount of data sent to POP clients by the POP Server. This value is the sum of all the data sent by the POP agent monitored targets.

Metric Summary

The following table shows how often the metric's value is collected.

Target Version	Evaluation and Collection Frequency
Version 1.0	Every 15 minutes

67.1.3 Network Clients

This metric shows the total number of client connections open on the POP Server. The value is the sum of all open connections for POP agent monitored targets.

Metric Summary

The following table shows how often the metric's value is collected.

Target Version	Evaluation and Collection Frequency
Version 1.0	Every 15 minutes

67.2 Response

The Response category captures the response characteristics of the POP agent monitored target as seen by a client application.

67.2.1 Status

This metric indicates whether or not clients are able to access Mails through the POP Server. Its availability depends upon the status of all POP agent monitored targets. The status is "up" as long as at least one of the POP agent monitored targets is up.

User Action

If the Status of Mail POP Redundancy Group is down, then check the status of the individual POP agent monitored targets to identify which particular one is down.

67.3 Security

The Security category provides information about security related activities.

67.3.1 Refused Flood Connections

This metric shows the connections refused by the POP Server. The value is the sum of all the connections refused by the POP agent monitored targets.

Metric Summary

The following table shows how often the metric's value is collected.

Target Version	Evaluation and Collection Frequency
Version 1.0	Every 15 minutes