I have a domain controller based on samba 3.0.2a and LDAP . I can log on to domain from windows workstation , but i have some messages in log : Mar 25 11:05:30 samba smbd[17074]: [2004/03/25 11:05:30, 0] rpc_server/srv_pipe_hnd.c:process_request_pdu(605) Mar 25 11:05:30 samba smbd[17074]: process_request_pdu: failed to do schannel processing. Mar 25 11:05:57 samba smbd[17076]: [2004/03/25 11:05:57, 0] smbd/service.c:make_connection(857) Mar 25 11:05:57 samba smbd[17076]: seriga (192.168.201.121) couldn't find service max Mar 25 11:05:58 samba smbd[17080]: [2004/03/25 11:05:58, 0] smbd/service.c:make_connection(857) Mar 25 11:05:58 samba smbd[17080]: seriga (192.168.201.121) couldn't find service max Mar 25 11:05:59 samba smbd[17082]: [2004/03/25 11:05:59, 0] smbd/service.c:make_connection(857) Mar 25 11:05:59 samba smbd[17082]: seriga (192.168.201.121) couldn't find service max I don't understand what does it mean Mar 25 11:05:59 samba smbd[17082]: seriga (192.168.201.121) couldn't find service max Max is a user in LDAP database . I Thank you .