user      = <%= scope.lookupvar('mail::virtual::database_user') %>
password  = <%= scope.lookupvar('mail::virtual::database_password') %>
hosts     = <%= scope.lookupvar('mail::virtual::database_host') %>
dbname    = <%= scope.lookupvar('mail::virtual::database_name') %>
query     = SELECT maildir FROM mailbox WHERE username='%s' AND active = '1'
#expansion_limit = 100