This would be great if some of the excellent components that work with qmail to make a nice email appliance also got updated.
qmail with vpopmail and qmailadmin used to make a great email appliance, but previously the overhead of maintaining it made it un-usable long term so I ditched it for postfix+dovecote+postfixadmin
but there was a lot to like about qmail+vpopmail+qmailadmin