70 Mail SMTP Redundancy Group

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

70.1 Bytes Transferred

The Bytes Transferred category provides information about the data transferred between SMTP Server and SMTP Clients.

70.1.1 Bytes Transmitted

This metric measures the amount of data sent to clients by the SMTP Server. This value is the sum of all the data sent by the SMTP 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

70.2 Client Connections

The Client Connections category provides information about the client connections on the SMTP Server.

70.2.1 Current Client Connections

This metric shows the number of client connections currently open on the SMTP Server. The value is the sum of all currently open connections for SMTP 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

70.3 Messages

The Messages category provides information about the messages sent and received by the SMTP Server.

70.3.1 Total Number of Messages Received

This metric measures the number of messages received by the SMTP Server from the SMTP Clients. This value is the sum of all the messages received by the SMTP 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

70.3.2 Total Number of Messages Transmitted

This metric measures the number of messages sent to SMTP clients by the SMTP Server. This value is the sum of all the data sent by the SMTP 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

70.4 Response

The Response category captures the response characteristics of the SMTP server as seen by a client application.

70.4.1 Status

This metric indicates whether or not the clients can access emails through the SMTP Service. The availability of SMTP Service depends upon the status of all SMTP agent monitored targets. The status is "up" as long as at least one of the agent monitored targets is available.

User Action

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