[Samba] Issue joining a PC to a Samba domain from a subnet other the one that Samba PDC

[powderskier9 at hotmail.com]

Hello,

Thanks in advance for taking the time to look at this issue. We are 
currently experiencing an issue with PC's not being able to join a Samba PDC 
controlled domain when the PC's are located outside of the subnet that the 
Samba PDC is part of. The PC's are located in the same physical building as 
the PDC, connecting over a Cisco VLAN to the Samba PDC subnet. For example, 
the PDC is part of the 192.168.1.x subnet and the client PC is part of 
192.168.70.x . subnet.  If the client tries to join the domain from this 
network segment, then error message;

Logon failure: unknown username or bad password

will appear on the client end. The client PC's are Windows XP SP2 systems. 
They have File & Printer sharing enabled, disabled Windows Firewall, 
disabled 3 digital signing policies. These same PC settings will work in 
respect to joining the domain when I am wired into the same network segment 
as the PDC. However, once the same PC is moved out of the server subnet, 
then the domain join will fail. I have read a posting on this on the Samba 
list which recommends removing the loopback address as a resolution. Can 
anyone please explain why this would resolve this problem?

We are currently running the following setup on the PDC;

OS                =    Suse Linux Server version 9.1
Server            =    Samba 3.0.20b-3.4
Linux Kernel   =    Linux version 2.6.5-7.97-smp

I have tried to add an lmhosts entry(ie.129.x.x.x Cancer #PRE #DOM:cruk) to 
the PC's that are not on the same subnet as the PDC, and the problem still 
appears to occur.

If anyone could please provide some insight to the cause of this problem and 
how it can be resolve, I would appreciate it.

Thanks,

Mark

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