# set default server
			serverfqdn = "dc%s.%s" % (self.departmentNumber, 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'])
			ou_attr_LDAPAccessWrite = self.adminlo.get(ou_dn,['univentionLDAPAccessWrite'])
			alternativeServer_dn = None
			if len(ou_attr_LDAPAccessWrite) > 0:
				alternativeServer_dn = ou_attr_LDAPAccessWrite["univentionLDAPAccessWrite"][0]
				if len(ou_attr_LDAPAccessWrite) > 1:
					ud.debug( ud.ADMIN, ud.WARN, 'SCHOOLGROUPS: more than one corresponding univentionLDAPAccessWrite found at ou=%s' % self.departmentNumber )

			# build fqdn of alternative server and set serverfqdn
			if alternativeServer_dn:
				alternativeServer_attr = self.adminlo.get(alternativeServer_dn,['uid'])
				if len(alternativeServer_attr) > 0:
					alternativeServer_uid = alternativeServer_attr['uid'][0]
					alternativeServer_uid = alternativeServer_uid.replace('$','')
					if len(alternativeServer_uid) > 0:
						serverfqdn = "%s.%s" % (alternativeServer_uid, self.configRegistry['domainname'])