Hi
Try just setting the WINS Server Attribute on the second server (Not the Domain Controller) like this
# db configuration setprop smb WINSServer 192.168.123.45
# expand-template /etc/samba/smb.conf
--> Use your IP address!!!
SME will only accept another server as WINS when not set to Domain Controller in the Workgroup settings.
Also add the second server under Hosts and Adresses (I'm using german, so it may be called differently under english...) on the Primary Server. Add the second server as "local", that way also the reverse DNS is done correctly.
Both servers must have the same workgroup name set in server-manager.
This way, your second server is a member of a workgroup (Not domain member) and needs user accounts created locally for access. This way also only certan users from your domain can access server2, the others may see it in the network, but can't access it.
The second server should also use the first server as DNS, this can be set under "domains" in server manager.
Both servers will show up under network neighborhood.
YMMV, but it works!
Andy Wismer