Restrict Calendar from sharing to everyone
We have a Windows 2008 Domain runing Exchange 2007. Recently it was brought to our attention that anyone can see anyone else's calendar. While less critical at the lower levels of business, at the coprorate level there are confidential items on calendars. We have been on Exchange 2007 for about 6 months and maybe no one ever notice before. Introduced into our environment in the last couple of month is Share Point. We have been digging everywhere we can find and cannot see any rights that should be changed. The closet thing that I can find is in Outlook looking at the calendar permissions, Default is granted Free/Busy Time. Anonymous is set to None. Is there somewhere we should be looking? Is there a global command in the command shell to fix?
October 9th, 2009 12:07am

Here's a way to do it with PVDavAdmin http://exchangeshare.wordpress.com/2008/05/27/faq-give-calendar-read-permission-on-all-mailboxes-pfdavadmin/. Actually it describes a way to enable read access on all calendars for everyone, but you can remove it as well. Michael
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October 9th, 2009 2:06am

I downloaded and ran the program and configured group Everyone access to None. That didn't change anything. Is there something I should be looking for or changing? Are these rights standard for Exchange or did we inadvertently change something somewhere? Thanks.
October 9th, 2009 6:47pm

Hi, I assume that you are able to open other’s calendar folder by using Outlook->File->Open other’s folder->select calendar folder. If you are able to open other’s calendar folder, you either have Full Mailbox Access permission to other’s mailbox or you have reviewer permission to other’s calendar folder. From your description “Default is granted Free/Busy Time. Anonymous is set to None”, looks like the Calendar folder permission is correct. Would you please run get-mailboxpermission –id user and post result here? Please select a random user for check. ~~~~~~~~~~~~~~~~Mike Shen TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb @ microsoft.com ~~~~~~~~~~~~~~~~
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October 13th, 2009 9:25am

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