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Event ID: 1803 Source: MSExchangeOMA

User <user name> has either changed the password recently or not yet created a mailbox using an advanced client such as Microsoft(R) Outlook or Outlook Web Access. The back-end server returned a 401 Access Denied error.
As per Microsoft: "This event indicates that the user has not logged on to the mailbox using either Outlook or Outlook Web Access". See MSEX2K3DB for more details.

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