Hi
If you issue # qmailctl, it will give you help commands. If you do not see it, your qmail is not correctly installed or not there.
[root@khdmaty ~]# qmailctl cdb
-bash: qmailctl: command not found
Well, you do not have your Qmailtoaster installed properly. The best is to remove every thing related to qmail and reinstall it.
Work on this error:
Error: vpopmail-toaster conflicts with vpopmail
and remove all components. Work on this first to get installation working properly. You cannot run a fix script on a software not installed properly.
BTW, the sh /script/fix-all or even sh /script/cleanup DOES NOT PROPERLY REPAIR THE QMAILTOASTER. Thats why your problem remained.