Administration settings disappeared / are not saved. Why?
This means Internet Guest Account on your server has insufficient permissions to the WebMail data folder (its location is specified in inc_setting_path.php file). Please complete the steps below to grant the appropriate permissions: • using Windows Explorer, navigate to the folder which contains the data folder; • in context menu, choose “Properties” of the data folder and “Security” tab; • add Internet Guest Account (usually IUSR_