[ExchangeList] Outlook Anywhere And Cross Realm Trusts

  • From: William T Holmes <wth1@xxxxxxxxxxx>
  • To: "exchangelist@xxxxxxxxxxxxx" <exchangelist@xxxxxxxxxxxxx>
  • Date: Tue, 7 Oct 2008 10:32:26 -0400



I have a configuration in which I have a Cross Realm Trust between a Windows 2008 Domain and an MIT V5 Kerberos Domain. If I attempt to login via OWA using: user@xxxxxxxxxxxxxxx then I am successfully logged onto OWA. However if I attempt to log onto Outlook Anywhere from an Outlook 2007 Client then the logon is unsuccessful and the following event is generated on the exchange mailbox server (not the CAS server). If I attempt the same logon using the user@xxxxxxxxxxxxx then the logon is successful.


In addition if the client computer is actually a member of the Windows Domain you can you use either the Windows or MIT Kerberos credentials to logon even when logged onto a local (non domain) user account.


What I am trying to accomplish is: A non-member workstation logon to Outlook Anywhere using the MIT Kerberos Server as a Authentication Source. The goal is to have the end users log on using their existing MIT Kerberos Principles. The MIT K5 Principles are mapped to Windows User Accounts using the Security Identity Mapping Applet from Active Directory Users and Computers.






An account failed to log on.



                Security ID:                            NULL SID

                Account Name:                     -

                Account Domain:                 -

                Logon ID:                               0x0


Logon Type:                                          3


Account For Which Logon Failed:

                Security ID:                            NULL SID

                Account Name:                     user@xxxxxxxxxxxxxxx

                Account Domain:                


Failure Information:

                Failure Reason:                      Unknown user name or bad password.

                Status:                                    0xc000006d

                Sub Status:                             0xc0000064


Process Information:

                Caller Process ID:  0x0

                Caller Process Name:            -


Network Information:

                Workstation Name:              WS1

                Source Network Address:

                Source Port:                           1546


Detailed Authentication Information:

                Logon Process:                     NtLmSsp

                Authentication Package:     NTLM

                Transited Services:                -

                Package Name (NTLM only):              -

                Key Length:                           0


This event is generated when a logon request fails. It is generated on the computer where access was attempted.


The Subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.


The Logon Type field indicates the kind of logon that was requested. The most common types are 2 (interactive) and 3 (network).


The Process Information fields indicate which account and process on the system requested the logon.


The Network Information fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.


The authentication information fields provide detailed information about this specific logon request.

                - Transited services indicate which intermediate services have participated in this logon request.

                - Package name indicates which sub-protocol was used among the NTLM protocols.

                - Key length indicates the length of the generated session key. This will be 0 if no session key was requested.

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