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Public Folder Permissions
Public folders aren't really public.
They're accessible only to your workgroup. You set the
permissions easily in Outlook. You can grant or deny
access to any particular folder, to any particular
member of your workgroup. Security is assured. Here is a
screen shot from Outlook showing the permissions dialog
for a public folder.
Here's how to do it, step-by-step. You
need to be working online -- not offline -- to perform
these operations.
- Right-click the folder and choose
properties.
- Click the permissions tab page.
- Add or remove users or groups as
appropriate, and adjust permissions of each group.
If you don't see the permissions tab
page, it is either because you're working offline, or
you don't have Owner permissions on that public folder.
You must have the highest level of permissions (Owner)
in order to see the permissions tab page and manipulate
permissions.
Default and Anonymous
The Default and Anonymous groups must
not be given any permissions. Ensure that Default has no
permissions at all, including the Folder Visible
permission. "Default" in this context means any
authenticated user. That includes all of Exchange
Hosting Service's clients.
If you give permissions to "Default",
Exchange Hosting Service tech support will soon get a
complaint from one of our other customers that a rogue
folder has suddenly appeared. That would be because your
folder has become visible to others outside your
workgroup.
The one exception to this rule is that
mail-enabled public folders must grant the "Create
Items" permission to the user "Anonymous." Without that
permission, the folder will reject incoming
mail.
Users or Groups?
You can give permissions to the "All
YourCompany Recipients" group, or any other group that
exists in your workgroup, or you can give permissions
directly to individual users.
Best practice, especially in larger
organizations, is to always give permissions to groups
and not directly to individuals. If you give permissions
to individuals, and then add a new user to your company,
the new person will not have permissions on the public
folder. Using groups will cut down on administration and
problems. | 
