NNTP ProbeΒΆ
NNTP Probe checks if a NNTP server is actually alive. NNTP probe does a connection to NNTP server. After receiving the response from NNTP server it sends the QUIT command to terminate the connection.

NNTP Probe
Here is an example how to monitor NNTP Server via NNTP Probe.
Further details can be found here: NNTP Probe.