I kloxo
since few day now i'm telling problem about qmail problem with kloxo-mr 7
problem his real
did 5 fresh install with kloxo-mr and qmail sent 2 time only mail
remove dns template add new one , etc, etc
i notice that smtp/submission and imap/pop where remove by themself
only 1 FRESH INSTALL OF KLOXO_MR 6.5 stable and every thing his working find at the first time
maybe you should look for the broblem arroud or i'm just a stupid idiot !!!
hope that help