[Samba] Machine choosing unexpected logonserver in multi-dc domain 4.2.1

Rowland Penny rowlandpenny at googlemail.com
Thu Apr 23 02:35:39 MDT 2015

On 23/04/15 03:39, Fred Smith wrote:
> I have the following setup in a samba 4.2.1 multi-dc domain
> DC1 -
> DC2 -
> DC3 -
> I have a site and subnet setup for each DC in Active Directory Sites
> and Services
> DC1 server in site DC1 with subnet
> DC2 server in site DC2 with subnet
> DC3 server in site DC3 with subnet
> DC3 has dhcpd setup giving machines on it's network IPs
> When I login to a Win7 machine in DC3s site/network, it always gets
> logonserver DC1. I have tried leaving/join domain. The only way I can
> get it to use DC3 as logonserver is to stop samba on DC1 and DC2.
> I use the following command on the Win7 machine to verify the logonserver
> echo %logonserver%
> When I had this similar configuration in samba 4.1.x machines on DC3s
> network would always choose DC3 as the logonserver.

I do not think this is actually a samba4 AD problem, it is a general AD 
problem, try an internet search 'AD clients always use one DC'


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