attached there is an ebuild patch that use web-app, whithout it, the actual stable release (1.2.10), it's totaly broken on system with a custom /vhosts/webapp-config file.
Created attachment 149824 [details, diff] qmailadmin-1.2.10-r1.ebuild.patch note: i'm attaching this ebuild patch only to let the end-users that have problems using qmailadmin 1.2.10 with custom web-apps configurations, to solve the issue. a better solution is to remove the old 1.2.10 from the portage tree and bump the new 1.2.11 release (see #217817).
1.2.12 has webapp-config support