If I understand that correctly, the Windows server and the NetXMS server are on different networks.
How is the NetXMS server connecting to the Windows server for SNMP polls?
Is there a route to allow direct SNMP polls, a port forward through a router/firewall or are you using a proxy?
Is SNMP Polling enabled for the Windows server? Is the SNMP service running and configured to allow the polls (I believe by default the service will only allow queries from 127.0.0.1)? Does a Configuration Poll confirm that the NetXMS server can poll SNMP on the server at all?
How is the NetXMS server connecting to the Windows server for SNMP polls?
Is there a route to allow direct SNMP polls, a port forward through a router/firewall or are you using a proxy?
Is SNMP Polling enabled for the Windows server? Is the SNMP service running and configured to allow the polls (I believe by default the service will only allow queries from 127.0.0.1)? Does a Configuration Poll confirm that the NetXMS server can poll SNMP on the server at all?