After 4.12 >> 4.14.8 update I have got errors like: ?Timeout while waiting to contact a working DNS server while looking for SRV _kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.? Or same for : ?_ldap._tcp.dc._msdcs.mydom.com? At about 10 sec. after Samba start. But it seems I?m able to manage DNS using Windows tool. What?s more, wiki test for DNS is passing ?$ nslookup> set type=SRV> _ldap._tcp.samdom.example.com? Little strange. Paku.