Security Basics: Calendars in Exchange

["Ju Ne" <ddjjembe1 () hotmail com>]

We found information in a calendar within Exchange our organization that had 
sensitive data.  This calendar had permissions set to allow authenticated 
users to read this information if they were looking.  We want to determine 
how many other calendars are potentially revealing sensitive information 
without having to connect to them individually.
Do you know of a way to discover calendars in Exchange within our own 
organization that are open to authenticated users and not locked down 
without going to them one by one?
ddjjembe

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