Auto start on Linux before login

[champ 0]

reviving this. I'm trying to get this auto starting, however it doesn't seem to be using the TLS encryption. I tried doing what Earwig mentioned to copy the TrustedServers.txt file to the /.synergy/SSL/Fingerprints folder, but on my synergy server, when the service is ran from the client i get a 

ERROR: tls error occurred (system call failure)
ERROR: failed to accept secure socket
WARNING: client connection may not be secure

below is my service file. I feel like i'm close, but not sure what to do. Running the app from the debian desktop works fine

[Unit]
Description=Synergy Service
After=network.target

[Service]
User=root
Group=root
Type=simple
Restart=always
RestartSec=3
ExecStart=/bin/bash -c "XAUTHORITY=/var/run/lightdm/root/:0 /usr/bin/synergyc --no-daemon -n CLIENTNAME IPADDRESS:24800"


[Install]
WantedBy=default.target