Index: __init__.py
===================================================================
--- ucs-school-umc-schooladmin/modules/univention/management/console/handlers/school-groups/__init__.py	(revision 12342)
+++ ucs-school-umc-schooladmin/modules/univention/management/console/handlers/school-groups/__init__.py	(working copy)
@@ -447,7 +447,7 @@
 			ud.debug( ud.ADMIN, ud.WARN, 'SCHOOLGROUPS: verify_group_share: using gid=%s' % gid)
 
 			# set default server
-			serverfqdn = "dc%s.%s" % (self.departmentNumber, self.configRegistry['domainname'])
+			serverfqdn = "%s.%s" % (self.configRegistry['hostname'], self.configRegistry['domainname'])
 
 			# get alternative server (defined at ou object if a dc slave is responsible for more than one ou)
 			ou_dn = "ou=%s,%s" % (self.departmentNumber, self.configRegistry['ldap/base'])