I am using Samba jcifs API to access Windows shares from a Java program, I successfully log in with the string "smb://a.com;administrator:password@10.0.0.89/shared/".
After I change to a non-existent domain I can still log in successfully, this is also the same for workgroup.
I want to know how jcifs processes authentication.
I think it depend on samba server configuration.