Add to DNS:

_ldap._tcp.dc._msdcs.EXAMPLE.COM	SRV 0 0 389 ldap.example.com.

This entry is need when we direct SAMBA to act as a ADS member server. It is used to locate the PDC (LDAP server).

Also add a DNS entry for your samba server. We are assuming:

fs01		CNAME	larix
larix		A	192.168.1.55