hi,i have an exchange 2003 ent. and somehow one of the clients domain account got moved from "Users" group to "Built in" group.I can not find out if this happened by accident by one of another admins, is there a way to find out how this has happened?Thank youHani

Unless you have setup custom auditing, you cannot trace who did this.Henrik Walther Exchange MVP | MCM: E2K7 | MCITP: EMA/EA | MCSE: M+S - MSExchange.org

Dear customer: Our forum focuses on Exchange-related issue, since your issue is related to account audit, I suggest posting this issue into the following forum: Microsoft TechNet > Forums Home > Windows Server > Directory Services http://social.technet.microsoft.com/Forums/en-US/winserverDS/threads/ Also, I would like to provide some information for your reference: Open group policy editor, navigate to computer configuration-Windows settings-security settings-local policies-audit policy. Audit account management This security setting determines whether to audit each event of account management on a computer. Examples of account management events include: A user account or group is created, changed, or deleted. A user account is renamed, disabled, or enabled. A password is set or changed. If you define this policy setting, you can specify whether to audit successes, audit failures, or not audit the event type at all. Success audits generate an audit entry when any account management event succeeds. Failure audits generate an audit entry when any account management event fails. To set this value to No auditing, in the Properties dialog box for this policy setting, select the Define these policy settings check box and clear the Success and Failure check boxes. Default: Success on domain controllers. No auditing on member servers. Hope it helps. Rock Wang - MSFT