Changing a website from the alias domain to the other leaves duplicate entries
alias domain can refer to the same website domain
Steps to reproduce
Alias domain points from domain to own domain.
Given configuration (so far also correct): Website domain: domain.de Alias domain: test.de (test.de is alias of domain.de)
The customer can do this by following the steps below: Edit websites and change the domain from domain.de to test.de.
The result of the change is then that an alias domain can refer to the same domain.
change should not be possible because domain is no longer unique
Server OS + version: Debian 10 ISPConfig version: 3.2.7p1 Software version of the related software:
Server version: Apache/2.4.38 (Debian) Server built: 2021-12-21T16:50:43