Hi Laurent,
if i add an alias domain to a customer and i set the forword to another url the skeleton will not created.
When i edit the alias domain and i disable the forward the skeleton is available.
Simple test for you. Create a customer "mydomain.tld". Add an alias (aliasdomain.tld => mountpoint "aliasdomain.tld") with forward url.
Then have a look to the folder of the customer. There is no folder "aliasdomain.tld".
Now edit the alias domain remove the forward and save it. If you have a look again you will see the folder.
Is this a bug or a feature..
Sascha
Edit: I'm using Debian Wheezy with the lastest master