I have included this for the sake of completeness, but have personally decided that I will not be using this package. This is not a comment about the quality of the package, it appears to be quite good, it is just that it does not manage thin.
However postfixadmin is noted in gentoo mail server guide.Open this post in threaded view. The steps are outlined below and are based on the chroot-setup script provided in the Postfix source code. Set up the apache and php installs and then continue with this howto. Esta instalacion esta basada en la creacion de direcciones virtuales y dominio virtuales, es por este motivo que se creara un nuevo directorio en el arbol de postfix. So, that said, I'm not going to cover it here. For those of you who didnt know, Postfixadmin is a web frontend to the mysql or mariaDB database used by Postfix. This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS.
The postfixadmin package in gentoo repository is too old and not maintained and going to be removed from the directory.Maybe someone could help me with infos or a pointer to some it works howto. Can someone maintane the project in gentoo portage dir. The installation is quite simple and assumes you are running in the root account, if not you may need to add sudo to the commands to get root privileges.