Qmail+Ldap

Hello, I using Virtualmin version 2.611 to manager my qmail-ldap server, bu I have one doubt…

When I create one user in Virtualmin, this user is create with uid=username.localgroup, exemple "uid=jsanto.users,ou=People,dc=isic,dc=com,dc=br".

Does possible disable this ? I would like that user wiil be create only with username "uid=jsanto,ou=People,dc=isic,dc=com,dc=br".

thansk

Carlos