Network problem in W2K3 Server + Active Directory

[beavis]

Hello,

I installed W2K3 server on machine and all works fine. I have 2 network

adapters. One for local network and one for internet. I use Winroute for NAT

and mail administration. All works fine. Next I want install Active

Directory. I use AD wizard which install DNS and AD. All works fine but in

about 4 hours (sometime in later sometime sooner) my internet conection does

not work. I must change IP adres of network adapter for internet connection

and then change it back and all works fine. In protocols I see in SYSTEM

folder this errors : 8015, 2505, 8035. Can someone PLEASE help me?

[Marsden]

The event log shows an Event ID 2505 error (duplicate name on the network). The error may appear in the event log as either of the following messages:

Event ID : 2505

The server could not bind to the transport/device/netbt_<nic driver>

because another computer on the network has the same name. The server

could not start.

-or-

Event ID : 2505

The server could not bind to the transport/device/nbf_<nic driver>

because another computer on the network has the same name. The server

could not start

Details

Product: windows operating system

ID: 8035

Source: browser

Version: 5.0

Component: System Event Log

Symbolic Name: EVENT_BROWSER_ELECTION_SENT_ROLE_CHANGED

Message: The browser has forced an election on network %1 because the Domain Controller (or Server) has changed its role

Explanation

A network administrator promoted or demoted a domain controller, so another master browser must be elected in order to keep the network functioning.

Product: exchange

ID: 8015

Source: msadc

Version: 6.0

Component: Active Directory Connector

Symbolic Name: MSG_LDAP_MODIFY

Message: Modifying entry '{object name}' on directory {directory name}. {connection agreement name}

User Action

No user action is required.