The systems each need to know the other system exists, and where to find it to connect to it, the route to it.
See this preparing the installing, it explains - https://wiki.samba.org/index.php/Setting...stallation
About using the LL Manual as [member=5414]firenice03[/member] wrote, you had said you are reusing the conf file from a previous install.
Have you tried the manual from the start on this new computer, without using the conf from the previous machine ?
The link in this post also shows how to clean the environment to do a new install.
See this preparing the installing, it explains - https://wiki.samba.org/index.php/Setting...stallation
About using the LL Manual as [member=5414]firenice03[/member] wrote, you had said you are reusing the conf file from a previous install.
Have you tried the manual from the start on this new computer, without using the conf from the previous machine ?
The link in this post also shows how to clean the environment to do a new install.