I have the need to change the dovecot backing store from the default Maildir format into mdbox (maildir does not really scale well). It is easy to modify dovecot's configuration files so that it uses mdbox as its storage, but I would like to contribute back the changes to ispconfig in a way that it is incorporated in the main code. What would be the best direction in which I shall move? Shall this be a gui setting or perhaps a setting during setup and/or what ? And further, is there an interest for such a mod ? ispcomm.