You may receive an error message relating to the SSL certificate when you try to manage public folders through the Exchange System Administrator.  If this happens, clear the option to force SSL on the Exadmin virtual directory in IIS.

If the problem still occurs, try the following tip (copied from http://www.mcse.ms/message1725599.html)


1. Install ADSIEdit from the Windows Server 2003 support tools.

2. In the left pane, expand the Configuration container.

3. Expand the following: CN=Configuration, then CN=Services, CN=Microsoft Exchange, CN=<your organization name here>, CN=Administrative Groups, CN=First Administrative Group, CN=Servers, CN=Protocols, CN=HTTP, CN=1, CN=Exadmin 

4. Right-click Exadmin and choose Properties.

5. In the Attribute Editor, select both "Show mandatory" and "Show optional" check boxes.

6.  scroll down to the attribute "msExchSecureBindings" and double click on it.


7. The value of this attribute may be 443 (this is the SSL Port value). If it is, click the 443 value to select it and click the "Remove" button. Then click "Apply" and then "OK."

8. Close ADSIEdit and restart the Exchange System Manager.  The problem will hopefully be fixed.