The DNS (Domain Name System) settings must meet specific technical requirements set by the .IT registry. Before DNS updates are applied, they go through a validation process. This ensures the domain will function correctly once the DNS is active.

The .IT registry performs a check on new DNS settings before they are officially applied to a domain. You can use the official DNS validation tool provided by the .IT registry: https://dns-check.nic.it/

• Enter the domain name you're working with.
• Review the validation results.
• Fix any errors or warnings in your DNS configuration.