To configure automatic License Server discovery:
Add a DNS TXT record url=<server_url> for the following name:

To verify the record in a Unix environment:
Run the following command:
dig _jetbrains-license-server.<domain_name> TXT
If you've configured your DNS TXT record like this:
a valid response will look like this: 3600 IN TXT "url=http://lsserver:8080/licenseServer"