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User account locks out every 1 minute and Exchange Server logs message 529 for process "advapi"

Posted on 2008-10-23
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Last Modified: 2016-06-12
Domain Controller is a Windows 2003 Server with SP2, Exchange Server is a Windows 2003 Server with SP2 and Exchange 2003 with SP2 (Build 7638.2: Service Pack 2)
The account "username" exists for over 6 years under password security policy for which it changes every 3 months, two days ago password expired and was changed as usual, however the account get's locked out every minute while Event ID 529 logs "only" on the Exchange Server:

Event Type: Failure Audit
Event Source: Security
Event Category: Logon/Logoff
Event ID: 529
Date: 23/10/2008
Time: 09:08:08 a.m.
User: NT AUTHORITY\SYSTEM
Computer: MYSERVER
Description:
Logon Failure:
Reason: Unknown user name or bad password
User Name: ronald
Domain: ronald
Logon Type: 3
Logon Process: Advapi
Authentication Package: Negotiate
Workstation Name: MYSERVER
Caller User Name: MYSERVER$
Caller Domain: RONALD
Caller Logon ID: (0x0,0x000)
Caller Process ID: 1308
Transited Services: -
Source Network Address: -
Source Port: -

- Message is loged 3 times one per each user, username, username@mail, username@mail.company.com

First, I have verified on each Server that there are no procecess starting with this user account
Then, after tracking the Server where error is issued, I stopped IIS supposing that as Advapi is an impersonation process, the error could reside somewhere in IIS, and found out finally that the problem happens only when "SMTP" is running, I have stopped the SMTP service and problem seems to stop (as the corporate mail does also :-))

I have to mention that near end of may I have installed Outlook 2008 which may have a relation, but as the mail account resides on the user computer, when it is shutted down, the problem should stop; the case is that the problem still happens even if there are no mail clients working (looks like it resides on the Mailbox itself). Also mailbox was scanned for virus & spyware and it seems to be clean.

Thanks,

Ronald
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Question by:bpco
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Accepted Solution

by:
WideAreaMedia earned 250 total points
ID: 22786232
Have a look at http://blogs.msdn.com/puneetgupta/archive/2007/08/20/unknown-username-or-bad-password-inetinfo-exe-advapi.aspx. This seems to match your situation.

Best Regards,
Martin
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Author Comment

by:bpco
ID: 22790405
Problem solved, I user WinDBG & WireLink, I recall of an application authenticates to smtp server / send mail alerts through username

Thanks Martin
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