Also a good point to remember is that although Exchange 2000 allows you to set security on public folders in the public folder heirarchy and using Exchange System Manager, Outlook, and the Windows 2000 version of Windows Explorer, the tools are not interchangeable. Because Windows Explorer uses the W2k access control list (ACL) format to set security permissions on MAPI public folder heirarchy, and Exchange System Manager and Outlook use the MAPI ACL format. Exchange Web Storage System can correctly interpret both ACL formats, but the tools are not interchangeable. You should only use Exchange System Manager when editing security on the MAPI public folder hierarchy. For example, if you originally use Windows Explorer to set permissions on a public folder,then try to use Outlook or Exchange System Manager to change the settings, you'll not be able to change public folder security until you follow a work around. Then you should only use Exchange System Manager to set ACLs on public folders.
If the folder is a subfolder of Public Folders (Public Folders\TopLevelFolder), follow these steps
To allow ACLs to be set in Exchange System Manager:
In Windows Explorer, right-click the folder, select Properties.
On Security tab, Name, select an account, click Remove. Repeat this for all accounts.
Click to clear Allow inheritable permissions from parent to propagate to this object, then click Remove on confirmation dialog.
To save changes, click OK.
In Windows Explorer, right-click the folder again, then click Properties.
On Security tab, select Allow inheritable permissions from parent to propagate to this object check box.
To save, click OK.
If the folder in question is 2nd level folder of Public Folders (Public Folders\TopLevelFolder\SecondLevelFolder):
Complete steps above for TopLevelFolder.
Complete perform steps above for SecondLevelFolder.
