I'm experimenting with roundcube on a system that runs a Symfony application. That application is behind a Symfony firewall and uses FOSUserBundle (https://github.com/FriendsOfSymfony/FOSUserBundle) to authenticate against a MySQL database. Is there any means to use that database to logon existing application users. Roundcube would not add users, i.e. $config['auto_create_user'] = false;.
It looks like I need to add a MySQL database for postfix/dovecot. Once that's in place I can add an event listener to the Symfony application to update the postfix/dovecot database plus the roundcube database with new user data. Any thoughts?