NTDS Inter-site Messaging Errors

[mholbert]

I have a windows 2003 standard sp2 server, that appears to be having a problem. The Directory Service log shows the following errors, over and over again.

First error:
Date: 9.9.2007
Time: 8:47:51 AM
Type: Warning
User: N/A
Computer: LRDCDC2
Source: NTDS Inter-Site Messaging
Category: Intersite Messaging
Event ID: 1369
Description: The Intersite Messaging service requested an LDAP one-level search starting with the following container object. The operation failed.

Container object: CN=Sites,CN=Configuration,DC=int,DC=lrdc,DC=com
Additional Date:
Error value: 58 Teh specified server cannot perform the requested operation.

Second Error:
Date: 9.9.2007
Time: 8:47:51 AM
Type: Error
User: N/A
Computer: LRDCDC2
Source: NTDS Inter-Site Messaging
Category: Intersite Messaging
Event ID: 1866
Description: The Intersite Messaging service received the following extended error string information from LDAP.

Extended error string:

Additional Data: LDAP error value:
51 Server Down
Win32 extended error value:
0 The operation completed successfully.

Can anyone tell me what this means and how to resolve it?

Thanks, MH