-To configure, first you need to rename config.sample.php to config.php. You
-should then just take a peek at config.php and set $SpamFilters_YourHop to some
-string if you want to avoid tons of false hits on the RSS and DUL and ORBS
-databases. It should also speed up the scan somewhat.
-
-If you do not want to enable spam filters for all users, edit config.php and set
-the $AllowSpamFilters to false. Spam filters can take TONS of time, so if you
-don't want your users to complain and ask you tons of questions, this is a quick
-and easy method.
+INSTALLATION
+------------
+Plugin is installed by enabling it in SquirrelMail configuration script.
+Plugin configuration can be changed with configuration files stored in
+config/filters_config.php or plugins/filters/config.php. Default configuration
+values can be found in plugins/filters/config_default.php. If both
+configuration files are present, plugin uses file from config directory.
+
+Main configuration option that must be changed is $SpamFilters_YourHop setting.
+See comments about it in config_default.php. If $SpamFilters_YourHop uses
+default value, plugin will be unable to use RBL filtering correctly and
+warning message will is displayed to end user. If you don't want to use RBL
+filtering, you can disable it by setting $AllowSpamFilters option to false. If
+you can control your incoming SMTP server, it is recommended to turn RBL
+filtering on server.