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Outlook Anywhere causing lots of event 4625 in security log from Macbook clinet..

    Question

  • We have SBS2011 with exchange server, one user is using Macbook pro, he is only setup using outlook anywhere, he seems to be getting his email fine. but we are getting a event 4625 in security log every minute or two. 

    An account failed to log on.

    Subject:
    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: Mark
    Account Domain:

    Failure Information:
    Failure Reason: Unknown user name or bad password.
    Status: 0xc000006d
    Sub Status: 0xc000006a

    Process Information:
    Caller Process ID: 0x0
    Caller Process Name: -

    Network Information:
    Workstation Name: Mark-MacBook-Pro-2.local
    Source Network Address: 192.168.0.254
    Source Port: 12900

    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.

    any help would be appreciated! 

    Thursday, July 18, 2013 10:56 PM

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