Autocreate folders with specific permissions

[Fabio S. Schmidt]

Hi,

I have Dovecot 2.1 deployed running about 65k mailboxes. We need to create
a specific folder for all users with specific permissions. I mean, the user
could not delete or rename the folder.

To create the folder automatically I have used the autocreate, but is there
any way to set specific permissions on those folders?

My best regards.