Configuring Public folder scanning

To use the public folder scanning feature, you must configure GFI MailEssentials to scan the public folders. To do this:

1. In the GFI MailEssentials configuration, right click on the Anti-spam node and select Properties.

2. Select the Public Folder Scanning tab.

Screenshot 72 - Configuring Public folder scanning

3. Select the Enable Public Folder scanning checkbox.

4. From the Poll public folders via list choose how GFI MailEssentials will retrieve the emails from the public folders:

•	Via MAPI (requires that GFI MailEssentials be installed on the Microsoft Exchange Server machine itself). If you select MAPI you do not need to configure other settings.

NOTE: MAPI cannot be used to poll emails from Microsoft Exchange Server 2007 public folders.

•	Via IMAP (requires that the Microsoft Exchange IMAP service is started). IMAP allows you to scan the public folders remotely and also works well across firewalls. It can also be used with other Mail servers that support IMAP.

NOTE: IMAP cannot be used to poll emails from Microsoft Exchange Server 2007 public folders.

If you select IMAP, you must specify the Mail server name, port (default IMAP port is 143) as well as a username and password. You can also use a secure connection by selecting the Use SSL checkbox.

Screenshot 73 - Using WebDAV for public folder scanning

•

Via WebDAV - If you select WebDAV, you must specify the Mail server name, port (default WebDAV port is 80), a username and password, as well as the domain. You can also use a secure connection by selecting the Use SSL checkbox. By default, public folders are accessible under the ‘public’ virtual directory. If you changed this to something else, specify the correct virtual directory name to access the public folders by editing the text in the URL box.

5. If you selected IMAP or WebDAV, click Test. If everything works, the public folders will be created automatically and a dialog box as shown below will be displayed. If the test fails, check the credentials and re-test.

Screenshot 74 – Public folder scanning test succeeded

Creating a dedicated account to login via IMAP

NOTE: IMAP cannot be used to poll emails from Microsoft Exchange Server 2007 public folders.

If GFI MailEssentials is installed in a DMZ, for security reasons it is recommended to create a dedicated user account to retrieve the email from the public folders. This user would only have access to the GFI AntiSpam Folders. To do this on Microsoft Exchange Server 2003:

1. Before you proceed to create the user, use administrator credentials and click Test to ensure that IMAP is working properly and that the public folders have been created.

2. Create a new Active Directory (AD) user. This user can have limited rights.

3. Open the Microsoft Exchange System Manager and expand the Folders > Public Folders node. Right click on the GFI AntiSpam Folders public folder and select Properties from the context menu.

4. In the Properties dialog box, click the Permissions tab and then click Client permissions.

5. Click Add…, select the user you created in step 2, and then click OK.

6. Click on the user you just added to the client permissions list and set its role to owner from the Roles list. Make sure all checkboxes are selected and the radio buttons are set to All.

Screenshot 75 - Setting user role

7. Click OK twice to return to Microsoft Exchange System Manager.

8. Now right click on the GFI AntiSpam Folders and from the context menu select All tasks > Propagate settings.

9. In the Propagate Folder Settings dialog box, select the Folder rights checkbox and click OK.

10. Finally enter the username you have created in the GFI MailEssentials configuration and click Test to ensure the permissions have been set correctly.

Configuring the GFI anti-spam folders so that posts are hidden

If desired, you can hide the posts that users make from other users by configuring Microsoft Exchange Server to hide them.

1. Open the Microsoft Exchange System Manager and expand the Folders > Public Folders node. Right click on the GFI AntiSpam Folders public folder and select Properties from the context menu.

2. In the Properties dialog box, click the Permissions tab and then click Client permissions.

3. Click Add… and select the user/group you want to hide the posts from and then click OK.

4. Click on the user/group you just added to the client permissions list and set its role to Contributor. Make sure that only the Create items checkbox is selected and the radio buttons are set to None.

5. Click OK twice to return to the Microsoft Exchange System Manager.

6. Now right click on the GFI AntiSpam Folders and from the context menu select All tasks > Propagate settings.

7. In the Propagate Folder Settings dialog box, select the Folder rights checkbox and click OK.

NOTE: Users will only be able to post to the GFI anti-spam folders. They will not be able to view any emails, not even the ones they posted themselves.