Validate Virtual Servers don't work

I have about 50 virtual servers that I just transferred from a old virtualmin GPL system. Now Validate Virtual Servers complains about

Mail for domain : Home directory /home/xxx for user xxx is owned by group yyy

Usually group yy is apache but I'm certain that apache DOES NOT own that directory.

Also that same error is printed complaining that another virtual server group owns the home directory of another virtual server. And I have done find / -group yyy and it says yyy owns files only in its own home directory.

Something is broken but what???

Status: 
Closed (fixed)