Event 1016 Generated When You Open Mailbox or Schedule of Another User (173692)
The information in this article applies to:
- Microsoft Exchange Server 5.0
- Microsoft Exchange Server 5.5
This article was previously published under Q173692 SYMPTOMS
When you attempt to access another user's mailbox or schedule, Microsoft Exchange generates the following event in the Application Event log:
Event ID: 1016
Source: MSExchangeIS Private
Type: Success Audit
Category: Logons
NT User DOMAIN\username logged on to John Doe mailbox, and is not the
primary Windows NT account on this mailbox.
This occurs even if you have permission to access the mailbox, and it occurs regardless of whether your attempt is successful or unsuccessful.
CAUSE
This behavior is by design.
Exchange records Event 1016 in the Event Log regardless of how you set the diagnostics logging level on the Information Store.
The decision to log this error was made with security in mind. It is important that any possible security breach be logged. If this type of logging were suppressed, an actual breach of security would not be logged.
| Modification Type: | Minor | Last Reviewed: | 4/28/2005 |
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| Keywords: | kbprb KB173692 |
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