Article ID: 979566 - View products that this article applies to.
Consider the following scenario:
Log Name: Security Source: Microsoft-Windows-Security-Auditing Event ID: 4625 Task Category: Logon Level: Information Keywords: Audit Failure Description: An account failed to log on. ...... Failure Information: Failure Reason: An Error occurred during Logon. Status: 0xc000018b Sub Status: 0x0 Process Information: Caller Process ID: <ID> Caller Process Name: <path>\w3wp.exe ......
This problem occurs because the Client Access server does not have the required permissions for the Active Directory forest that contains the external accounts that are associated with the linked mailboxes. Therefore, an exception is generated for the linked mailbox accounts.
To fix this problem, install the following update rollup:
(http://support.microsoft.com/kb/979611/ )Description of Update Rollup 2 for Exchange Server 2010: February 18, 2010
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about proxying, visit the following Microsoft Web site:
General information about proxying
For more information about linked mailboxes, visit the following Microsoft Web site:
General information about linked mailboxes