You can run Extromatica Network Monitor on Windows NT, Windows 2000, Windows XP, Windows Vista and Window 2003 platforms.
One Extromatica Network Monitor installation is enough to monitor any number of server/services/devices and you need to buy only one license in this case.
You can run Extromatica Network Monitor as Windows service.
You can use Start/Programs/Extromatica Network Monitor/Register Service and Start/Programs/Extromatica Network Monitor/Unregister Service shortcuts to install/uninstall service.
After installing, use Start/Programs/Extromatica Network Monitor/Service Options shortcut to configure service instance. You should setup data file. In addition, it is possible to setup log and trace options.
Run the service.
Each time you modify something, add a new check/alert, remove an existing one or modify the properties of a check/alert, the data is saved to a temporary file. It allows you to recover the data when the program is exited incorrectly or an operating system failure occurs.
You can simply type the number of the port you want to check in the Port number field.
You can insert the following string into the Mail Alert body: %LastError%. Application will replace it with the error message.
It can be done with "Change Property" wizard.
Press "View Environment" in the alert page if check property dialog, select "Check" tab and drag-n-drop value from corresponding row to the check or alert field.
At the next check run this variable will be evaluated and its value will be substituted.
The citation from Microsoft:
Valid name, no data record of requested type.
The requested name is valid and was found in the database, but it does not have the correct associated data being resolved for. The usual example for this is a host name-to-address translation attempt which uses the DNS (Domain Name Server). An MX record is returned but no A record - indicating the host itself exists, but is not directly reachable.
It seems DNS record at DNS server for the host is not correct. Maybe it is a problem of DNS caching at your network segment. Sometimes it may occur as a result of hacker attack, for example DNS cache poisoning.
There are no any problems with Extromatica Network Monitor.
Try to check DNS name resolving from the host with Extromatica Network Monitor installed. As a partial solution you can try to specify IP address of host.
%t pattern is replaced with the time of the last check. It is the time just before the last check began.
If you have not ever started the check (it is just created) and only test the alert, the %t time is equal to the start of Unix epoch (1/1/1970) plus/minus time zone shift.