At the moment I'm using q-mail with VqAdmin to manage mailserver and qmail admin to mange domain accounts. Now I'm thinking to migrate to postfix using above howto. Is there any software similar to VqAdmin and qmailadmin for Postfix? Thank you
There are several software packages to manage virtual postfix accounts, but none that is especially written to work with the configuration in the howto.
But Postfixadmin doesn't work with this tutorial. You can use phpMyAdmin or write your own PHP application (so you can tailor it to your needs ).