PRTG Manual: Windows SMTP Service Received Sensor
The Windows SMTP Service Received sensor monitors the number of received emails of a Windows Simple Mail Transfer Protocol (SMTP) service via Windows Management Instrumentation (WMI) or Windows performance counters, as configured in the Windows Compatibility Options of the parent device.
For a detailed list and descriptions of the channels that this sensor can show, see section Channel List.
- Dutch: Windows SMTP Service Ontvangen
- French: Service Windows SMTP reçu
- German: Windows SMTP-Dienst Empfangen
- Japanese: Windows SMTP サービスが受信
- Portuguese: Serviço Windows SMTP recebido
- Russian: Получено пакетов службы Windows SMTP
- Simplified Chinese: 已接收 Windows SMTP 服务
- Spanish: Servicio SMTP de Windows recibidos
Consider the following remarks and requirements for this sensor:
Remark |
Description |
---|---|
Performance impact |
This sensor has a high performance impact. We recommend that you use no more than 200 of this sensor on each probe. |
Windows version |
This sensor requires at least Windows Server 2008 R2 on the probe system (on every cluster node, if on a cluster probe).
|
Remote Registry Windows service |
This sensor requires that the Remote Registry Windows service runs on the target system.
|
WoW64 |
This sensor requires WoW64 (Windows 32-bit on Windows 64-bit) for target systems that run Windows Server 2016. |
Credentials |
This sensor requires credentials for Windows systems.
|
IPv6 |
This sensor supports IPv6. |
Hosted probe |
|
Hybrid Approach: Performance Counters and WMI
By default, this sensor uses WMI to request monitoring data. You can change the default behavior to a hybrid approach in the Windows Compatibility Options of the parent device's settings on which you create this sensor: if you choose this option, the sensor first tries to query data via Windows performance counters and uses WMI as a fallback if performance counters are not available. When running in fallback mode, the sensor tries to connect via performance counters again after 24 hours.
Sensors that use the WMI protocol have a high impact on the system performance. Try to stay below 200 WMI sensors per probe. Above this number, consider using multiple remote probes for load balancing.
For a general introduction to the technology behind WMI, see section Monitoring via WMI.
The sensor has the following default tags that are automatically predefined in the sensor's settings when you add the sensor:
- wmiiissmtpreceivedsensor
For more information about basic sensor settings, see section Sensor Settings.
Setting |
Description |
---|---|
Result Handling |
Define what PRTG does with the sensor result:
|
Setting |
Description |
---|---|
Primary Channel |
Select a channel from the list to define it as the primary channel. In the device tree, PRTG displays the last value of the primary channel below the sensor's name. The available options depend on what channels are available for this sensor.
|
Graph Type |
Define how this sensor shows different channels:
|
Stack Unit |
This setting is only visible if you select Stack channels on top of each other above. Select a unit from the list. PRTG stacks all channels with this unit on top of each other. By default, you cannot exclude single channels from stacking if they use the selected unit. However, there is an advanced procedure to do so. |
By default, all of these settings are inherited from objects that are higher in the hierarchy. We recommend that you change them centrally in the root group settings if necessary. To change a setting for this object only, click under the corresponding setting name to disable the inheritance and to display its options.
For more information, see section Inheritance of Settings.
Which channels the sensor actually shows might depend on the target device, the available components, and the sensor setup.
Channel |
Description |
---|---|
Downtime |
In the channel table on the Overview tab, this channel never shows any values. PRTG uses this channel in graphs and reports to show the amount of time in which the sensor was in the Down status |
Message Bytes Received |
The number of bytes in received messages |
Messages Received |
The number of received messages
|
KNOWLEDGE BASE
What security features does PRTG include?
My Windows sensors do not work when using direct performance counter access. What can I do?