# templates/tracker.service.j2
[Unit]
Description=Email Tracking Server
After=network.target

[Service]
User=root
Group=root
WorkingDirectory=/opt/tracker
ExecStart=/usr/bin/python3 /opt/tracker/app.py
Restart=always
RestartSec=10

# Security measures
PrivateTmp=true
ProtectSystem=full
NoNewPrivileges=true

[Install]
WantedBy=multi-user.target