Email Domain Alias
To create an "Email Domain Alias" it's necessary to first setup a domain for the Alias. This is a problem because the user when insert the domain, can use it to create email accounts instead of create an Alias. In this way, it's not possible to create a hosting plan allowing for example, 1 email Domain with 10 mailboxes and unlimited Email Domain Aliases. Beacause the user can create 10 mailboxes with 10 different domains.
I think it should work in the same way as "web domain aliases". Maybe there's a way to do it but i can't find how to allow ilimited Domain Alias and only one domain for mailboxes in a Limit Template.