We have installed a fresh install of Exchange 2013 on Server 2012.
We see Event ID: 4625 in the Security Logs and see thousands a day.
I have a read a few articles on this but I cannot put my finger on the cause so would welcome comment or solution.
A typical error reads as follows:
An account failed to log on.
Subject:
Security ID: SYSTEM
Account Name: SERVER$
Account Domain: SERVER0
Logon ID: 0x3E7
Logon Type: 3
Account For Which Logon Failed:
Security ID: NULL SID
Account Name:
Account Domain:
Failure Information:
Failure Reason: Unknown user name or bad password.
Status: 0xC000006D
Sub Status: 0xC0000064
Process Information:
Caller Process ID: 0xfc8
Caller Process Name: C:\Program Files\Microsoft\Exchange Server\V15\Bin\MSExchangeHMWorker.exe
Network Information:
Workstation Name: SERVER
Source Network Address: -
Source Port: -
Detailed Authentication Information:
Logon Process: C
Authentication Package: Kerberos
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.
- Edited by MrNewbie Tuesday, August 06, 2013 3:55 PM
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