postfix in chroot jail

Hi, i want to setup postfix in a chroot jail. In /etc/sysconfig/postfix i have set this variable : POSTFIX_CHROOT=yes POSTFIX_UPDATE_CHROOT_JAIL=yes And in /etc/sysconfig/mail : MAIL_CREATE_CONFIG=no Is this suffcient to have a working postfix+chroot eviroment ? Best regards , Cristian Del Carlo