troubleshooting Question

Entourage 2008 and exchange 2007 creating alerts on event viewer

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pccorrect asked on
Apple OSExchangeSBS
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I keep getting lot of alerts on MS small business server 2008 this the error  

Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 16/11/2010 08:50:54
Event ID: 4625
Task Category: Logon
Level: Information
Keywords: Audit Failure
User: N/A
Computer: SVR2.somedomain.local
Description:
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:
Account Domain:

Failure Information:
Failure Reason: An Error occured during Logon.
Status: 0x80090308
Sub Status: 0x0

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

Network Information:
Workstation Name:
Source Network Address: 192.168.34.65
Source Port: 52136

Detailed Authentication Information:
Logon Process:
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.
Event Xml:

only the macs are creating this alerts. all the pcs are fine.  emails are working fine on macs . apart from they can't receive any email with + sign on subject line (I have another question open for that)

Please any help or put me in right direction, Google didn't help
ASKER CERTIFIED SOLUTION
Ogandos
Systems Infrastructure Engineer

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