By default, users can create new subdomains and domain aliases in the DNS zones belonging to other users. This means that they can set up websites and email accounts which could be used for spamming, phishing or identity theft.
To prevent users from setting up domains and domain aliases in the DNS zones belonging to other users:
- Go to Tools & Settings > Server Settings.
- Select the Forbid users to create DNS subzones in other users’ DNS superzones checkbox.
- Click OK.