Attached an ebuild and patch for qmailadmin stable 1.2.9 Reproducible: Always Steps to Reproduce: 1. 2. 3.
Created attachment 71298 [details] qmailadmin-1.2.9.ebuild
Created attachment 71299 [details, diff] 1.2.9-maildir.patch
I've tried this ebuild on amd64 arch and it seems it works. It even solves problem that I had with version 1.2.1 which couldn't list e-mail accounts.
*** Bug 79687 has been marked as a duplicate of this bug. ***
1.2.9 in portage, thanks all