LDAP Issue - LDAP BIND against Windows 2008 DC does not work

Hello,

We work with an Authentication Service which does LDAP Connections to 3
different Domains. The Server with the Authentication Service is in a
separate Domain and Network zone. The Server is running Windows Server 2003
R2.
Tha Authentication Service retrieves information from the 3 domains:

DomainA: All DCs running Windows Server 2003
DomainB: All DCs running Windows Server 2003
DomainC: All DCs running Windows Server 2008

The LDAP Bind for Domain A and B works fine. But the Server is unable to
make a LDAP Bind to the Windows 2008 DC.

More Information:

- The Firewall Configuration to all Domains ist exactly the same (only
Ports 389tcp 389udp, 636tcp are open)
- The User doing the LDAP Bind has the same privileges in all 3 Domains
(individual Service Account for every Domain)
- The Default Domain Controller Group Policies are the same for all 3 Domains
- The local Firewalls on the Windows 2008 DCs allow all incoming LDAP Traffic

Has anyone an Idea why the LDAP Bind does not work to the Windows 2008 DCs???

thanks

What error is returned from the bind? What authentication are they using?

QuesionVB wrote:
> Hello,
>
> We work with an Authentication Service which does LDAP Connections
> to 3 different Domains. The Server with the Authentication Service is
> in a separate Domain and Network zone. The Server is running Windows
> Server 2003 R2.
> Tha Authentication Service retrieves information from the 3 domains:
>
> DomainA: All DCs running Windows Server 2003
> DomainB: All DCs running Windows Server 2003
> DomainC: All DCs running Windows Server 2008
>
> The LDAP Bind for Domain A and B works fine. But the Server is unable
> to make a LDAP Bind to the Windows 2008 DC.
>
> More Information:
>
> - The Firewall Configuration to all Domains ist exactly the same (only
> Ports 389tcp 389udp, 636tcp are open)
> - The User doing the LDAP Bind has the same privileges in all 3
> Domains (individual Service Account for every Domain)
> - The Default Domain Controller Group Policies are the same for all 3
> Domains
> - The local Firewalls on the Windows 2008 DCs allow all incoming LDAP
> Traffic
>
> Has anyone an Idea why the LDAP Bind does not work to the Windows
> 2008 DCs???
>
> thanks

--
/kj