HP StorageWorks Clustered File System 3.2.1 Windows Storage Server Edition Administration Guide (February 2006)

Chapter 11: Configure Service Monitors 107
HTTPS Service Monitor
This monitor functions in the same manner as the HTTP service monitor;
however, it uses the HTTS protocol to make the connection to port 440.
The URL specified for the monitor should begin with HTTPS.
SMTP Service Monitor
By default, the SMTP service monitor probes TCP port 25 (sendmail port)
of the virtual host address. You can change this port number to the port
number configured for your SMTP server. The default frequency of the
probe is every 30 seconds. The default time that the service monitor waits
for a probe to complete is five seconds.
The probe attempts to connect to port 25 and expects to read an initial
message from the SMTP server. This message should begin with 220. If
the probe is successful, the monitor sends the string QUIT\n to the SMTP
server. If there are no errors, the service status remains Up. If an error
occurs, the status is set to Down.
TCP Service Monitor
The generic TCP service monitor defaults to TCP port 0. You should set
the port to the listening port of your server software. The default
frequency of the probe is every 30 seconds. The default time that the
service monitor waits for a probe to complete is five seconds. Because the
service monitor cannot know what to expect from the TCP port
connection, it simply attempts to connect to the specified port. If the
attempt is successful, the service status remains Up.
NOTE: Service monitors using TCP port numbers must be assigned
distinct port numbers. For example, the built-in FTP service
monitor and a generic TCP monitor cannot both attempt to use
TCP port 21. You do not need to specify an IP address because a
service monitor is associated with a virtual host. HP Clustered File
System uses that virtual host IP address in combination with the
TCP port number to create network TCP connections for service
monitors.