- better log messages on rspamd plugin

- ignore @/*@ targets for spamfilter_user in rspamd plugin

Author: Marius Burkard

server/plugins-available/rspamd_plugin.inc.php

@@ -131,7 +131,11 @@ function user_settings_update($event_name, $data) {
 		$is_domain = false;
 		$email_address = $data[$use_data][$identifier];
 		$settings_name =  $email_address;
-		if(!$email_address) {
+		if($email_address === '*@' || $email_address === '@') {
+			// we will ignore those global targets
+			$app->log('Ignoring @ spamfilter_user as rspamd does not support it this way.', LOGLEVEL_DEBUG);
+			return;
+		} elseif(!$email_address) {
 			// problem reading identifier
 			$app->log('Empty email address in rspamd_plugin from identifier: ' . $use_data . '/' . $identifier, LOGLEVEL_WARN);
 			return;
@@ -145,7 +149,7 @@ function user_settings_update($event_name, $data) {
 
 		if($settings_name == '') {
 			// missing settings file name
-			$app->log('Empty email address in rspamd_plugin from identifier: ' . $use_data . '/' . $identifier, LOGLEVEL_WARN);
+			$app->log('Empty rspamd identifier in rspamd_plugin from identifier: ' . $use_data . '/' . $identifier, LOGLEVEL_WARN);
 			return;
 		}