When the Archive Manager Data Loader service and/or the Archive Manager Exchange Store Manager service attempt to logon to an Exchange 2010 mailbox via a CAS array name, the following error can be observed in the WLOG file:
ERROR: Unable to calculate clock skew:
NetRemoteTOD(\\CAS_array_name):
[00000035] The network path was not found.
ERROR: Unable to determine clock skew. It is not possible to update folder last processed times.
The DNS record for the CAS array effectively creates an alias name for each of the CAS servers in the CAS array.
If a Server Message Block (SMB) 1.0 server receives a request on an alias name (the CAS array hostname) it will detect a duplicate name and by default will not service the request.
SMB 2.0 is not affected by this problem. SMB 2.0 will only be used if both the SMB server (CAS Server) and SMB Client (Archive Manager) support SMB 2.0, otherwise SMB 1.0 will be used.
Windows Server 2003 only supports SMB 1.0
Windows Server 2008 and 2008 R2 support SMB 1.0 and SMB 2.0
Use the Resolution from SOL68819
Although the error message differs, it has the same root cause and fix.
