- Change Hostname . - Set 'Listen to IP' to All - Change 'use FQDN' to the new fqdn. - Change Custom hostname to the new Hostname.
Be aware that you need to change the FQDN by "Managed by EMS" in EMS > Deployment & Installers > FortiClient Installer > for the package in question .
You would try and download this installer from you're EMS and deploy on a new endpoint and see if it is connecting to the correct Telemetry server. Be aware that you might have endpoint connectivity issues.
The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.