Feature Request: Domain Blacklist for Sites and Email Domains, and maybe DNS?
NOTE: Please re-assign as feature request.
Would it be possible to have some sort of domain blacklist for sites/email so that users cannot try adding domains used by the system (not created in control panel already as it would cause conflict).
This should ideally prevent clients from adding a site with a domain being used for other system resources/endpoints not configured in control panel, as well as email domain owned/used by the mail server, but not configured in control panel.
Otherwise the workaround solution is to add them to the control panel and disable them which seems inefficient considering it then creates the unneeded directories and could cause conflict with configured services.
Edited by Collin Machine