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.