1. From the GFI MailEssentials configuration console go to Anti-spam > Anti-Spam > Anti-Spam Settings. Select Public folder Scanning tab.
2. Select Enable Public folder Scanning and from Poll public folder via list select:

• Exchange Server 2003 - Choose IMAP or WebDAV.
• Exchange Server 2007 - Choose WebDAV or Web Services.
• Exchange Server 2010/2013/2016/2019 - Choose Web Services.

Options are described in the table below.

Option	Description
IMAP	Requires Microsoft® Exchange IMAP service. IMAP enables remote scanning of public folders and works well in environments running firewalls. In addition, IMAP can be used with other mail servers that support IMAP. Parameters required are: Mail server name Port number (default IMAP port is 143) Username/password. Use an administrative account with permission to create Public folders. Select the Use SSL option to use a secure connection
WebDAV	Specify mail server name, port (default WebDAV port is 80), username/password and domain. To use a secure connection select the Use SSL checkbox. By default, public folders are accessible under the ‘public’ virtual directory. If this has been changed, specify the correct virtual directory name to access the public folders by editing the text in the URL box.
Web Services	Specify the following details: Server - mail server name Domain - use the local domain. If both a local and a public domain exist, always use the local domain. Port - default Web Services port (80, or 443 if using SSL). Username/password - use credentials with administrative privileges or create a dedicated user from Microsoft® Exchange Management Shell by entering the following command to add the appropriate permissions: Add-ADPermission -identity "Mailbox Store" -User NewUser -AccessRights GenericALL Replace Mailbox Store with the name of the mailbox store that contains the user mailboxes and NewUser with the username of the created user. Use SSL - Select this option if Exchange Web Services requires a secure connection. By default, Web Services requires SSL. URL - By default, public folders are accessible under the ‘EWS/exchange.asmx’ virtual directory. If this has been changed, specify the correct virtual directory name to access the public folders by editing the text in the URL box. It is recommended to test the settings manually, by loading the URL in a web browser. This should load an XML formatted file, named services.wsdl.

3. Click Apply.
4. Click Test if you are setting up IMAP, WebDAV or Web Services. On screen notification will confirm success/failure. If the test fails, verify/update credentials and re-test.
5. Click Scan Now to automatically create the Public folders.

For security reasons, it is recommended that when GFI MailEssentials is installed in a DMZ, a dedicated user account is created to retrieve or scan emails from public folders.

Microsoft^® Exchange Server 2007 or later

1. Create a new Active Directory user.
2. Login to the Microsoft^® Exchange Server using administrative privileges.
3. Open Microsoft^® Exchange Management Shell and key in following command:

Get-PublicFolder -Identity "\GFI AntiSpam Folders" -Recurse | ForEach-Object {Add-PublicFolderClientPermission -Identity $_.Identity -User "USERNAME" -AccessRights owner}

Replace USERNAME with the username of a dedicated Active Directory user that has 'owner' access rights on the GFI AntiSpam Public folders. For example:

Get-PublicFolder -Identity "\GFI AntiSpam Folders" -Recurse | ForEach-Object {Add-PublicFolderClientPermission -Identity $_.Identity -User "mesuser" -AccessRights owner}

For privacy and security purposes, it is highly recommended that you hide user posts made on GFI AntiSpam folders. This way, email users will only be able to post to the folders without viewing existing posts (not even the ones they posted themselves).

For more information on how to do this refer to http://go.gfi.com/?pageid=me_pfhideposts