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Event Notification Module 8.3 throws an error "Unable to send relay test request to server" when testing a subscription"

Issue:
While using ENM 8.3, a user is attempting to test the ENM functionality by sending out a test email. However, when they click on the "test" button they get a pop-up stating, "Unable to send relay test request to server" when testing a subscription".

Product Line:
Event Notification Module 8.3
PowerScada Expert 8.0
Power Monitoring Expert 8.0

Environment:
Power Monitoring Expert Software Configuration

Cause:
There are no errors in the Diagnostics tab in the Monitoring and Diagnostics webpage (http://<server name>:85). There are also no errors in the Windows Event Viewer. 

Resolution:
This is because the SE Event Notification Service is not running. Once this service is started successfully, the test page will get sent out successfully. 
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