DHCP Server does not start

Hi

The DHCP Server does not start with events 7024, 1004, 1018, and 1008 as given below. What is the problem and how can we fix it? There may have been other DHCP servers on the same network earlier on but none now except this one in SBS 2011 server.

Many Thanks

Regards

Log Name:      System
Source:        Microsoft-Windows-DHCP-Server
Date:          27/08/2011 14:19:26
Event ID:      1008
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      MYCOMPUTER.MYDOMAIN.local
Description:
The DHCP service is shutting down due to the following error:
The DHCP/BINL service is not authorized in the directory service domain "2A040000" (Server IP Address The DHCP/BINL service is not authorized in the directory service domain "2A040000" (Server IP Address The DHCP/BINL service is not authorized in the directory service domain "2A040000" (Server IP Address The DHCP/BINL service is not authorized in the directory service domain "%2" (Server IP Address %1)
)
)
)

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-DHCP-Server" Guid="{6D64F02C-A125-4DAC-9A01-F0555B41CA84}" EventSourceName="DhcpServer" />
    <EventID Qualifiers="0">1008</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2011-08-27T13:19:26.000000000Z" />
    <EventRecordID>152382</EventRecordID>
    <Correlation />
    <Execution ProcessID="0" ThreadID="0" />
    <Channel>System</Channel>
    <Computer>MYCOMPUTER.MYDOMAIN.local</Computer>
    <Security />
  </System>
  <EventData>
    <Data>The DHCP/BINL service is not authorized in the directory service domain "%2" (Server IP Address %1)
</Data>
    <Binary>2A040000</Binary>
  </EventData>
</Event>