yes steve, thanks to answer my question, yes i have en /etc/krb5.conf ONLY the follow line [libdefaults] dns_lookup_realm = true dns_lookup_kdc = true default_realm = ECCMG.CUPET.CU today I test again the replication and happend tha the replicaction from windows server 2003 to samba 4 was succeful, but from tha samba 4 server to windows 2003 say me nothing don not show any error and don not show succefful replication only stay thinking.......