Is the server you're trying to connect to in the LAN subnet (192.168.1.0/24)? If not, does the MX have a route to the subnet the server is in and does the server's gateway have a route to the VPN subnet?
You can add a static route in the MX as necessary and do the same on the gateway of the server if it's not the MX.
MRCUR | CMNO #12