[Samba] where is the machine name used?

[MargoAndTodd]

Hi All,

Just a bit of PDC confusion on my part.

1) I do not give machine names a password.  Am I
correct?

2) I am presuming that machine names are used to
limit what machine user names can have access to
to the samba server.  If Foo has an smb username
and computer A has a machine name, but computer B
does not, then Foo can enter only through computer
A.  Am I correct?

3) If I am correct on #2 above, the machines that
do not have a samba user can get around this by
entering as a workgroup.  Am I correct?

4) When joining a domain, the user name and password
requested is the root's or whatever alias that smbusers
points to and not the machine's name.  Am I correct?

Many thanks,
-T