Prevent the user from changing their e-mail aliases

Question

Does anyone know how the "Citadel e-mail server" prevents the user can define their e-mail aliases yourself?

I've already read the FAQ, but unfortunately I have not found anything.

Answer 1

In my current version (8.17) only users with Aide rights can change their e-mail alias on citadel/webcit.

I believe that users with lower rights can't change it, at least when I tried, my users are "local users" (one Aide, and sometimes other for testing purposes).