DCDIAG failing - 2008 DC in an existing 2003 Domain

I have recently just added a 2008 DC to an exisiting 2003 Domain
When I run DCDIAG I get the following errors, not sure why and what I need to do to fix  :-


 Running enterprise tests on : ldc.intamac.co.uk
    Starting test: LocatorCheck
       ......................... ldc.intamac.co.uk passed test LocatorCheck
    Starting test: Intersite
       Doing intersite inbound replication test on site LDR-INSIDE:
          Remote bridgehead LDR-INSIDE\LDR-DC-01 also couldn't be contacted
          by dcdiag.  Check this server.
          ***Error: The remote site Default-First-Site-Name, has no servers
          the local site LDR-INSIDE for the writeable NC ForestDnsZones.e and
          Replication will not continue until this is resolved.
          ***Error: The remote site Default-First-Site-Name, has no servers
          the local site LDR-INSIDE for the writeable NC DomainDnsZones.e and
          Replication will not continue until this is resolved.
       Doing intersite inbound replication test on site
       Default-First-Site-Name:
          *Warning: Remote bridgehead LDR-INSIDE\LDR-DC-01 has some
          replication syncs failing.  It will be 1 hours 59 minutes and  0
          failed replication attempts before  the bridgehead is considered
          ineligible to be a bridgehead.
          Remote bridgehead LDR-INSIDE\LDR-DC-01 also couldn't be contacted
          by dcdiag.  Check this server.
       ......................... ldc.intamac.co.uk passed test Intersite