You can easly change hostname of your Libraesva ESG appliance.
If the appliance is on Libraesva cloud you have to open us a ticket from https://libraesva.freshdesk.com
If the appliance is on-premise or in your cloud you can follow the below steps:
- create a new A record with the new FQDN of your appliance
- change your reverse DNS record with the new hostname
- wait till 72h to let all settings propagated into worldwide DNS
- change the hostname: system > appliance > networking > network settings > Hostname (reboot needed)
- update certificates
- system > appliance > networking > web HTTPS certificate
- system > mail transport > TLS > default certificate
- update report link URL: system > appliance > quarantine settings > general settings
- open a ticket to https://libraesva.freshdesk.com if you have quarantine reports configured