- enable greylisting setting for catchall mail addresses

- change the way greylisting setting is evaluated (prio is now 1. mail user, 2. mail forward/alias, 3. catchall), fixes #5378

install/tpl/mysql-virtual_policy_greylist.cf.master

 user = {mysql_server_ispconfig_user}
 password = {mysql_server_ispconfig_password}
 dbname = {mysql_server_database}
-query = SELECT 'greylisting' FROM (SELECT greylisting, source AS email FROM mail_forwarding WHERE server_id = {server_id} UNION SELECT greylisting, email FROM mail_user WHERE server_id = {server_id}) addresses WHERE addresses.email='%s' AND addresses.greylisting='y' UNION SELECT 'greylisting' FROM `mail_forwarding` f CROSS JOIN `mail_user` u ON u.email = f.destination WHERE f.type = 'catchall' AND u.greylisting = 'y' AND u.server_id = {server_id} AND f.source = '@%s'
+query = SELECT 'greylisting' FROM (SELECT `greylisting`, 1 as `prio` FROM `mail_user` WHERE `server_id` = {server_id} AND `email` = '%s' UNION SELECT `greylisting`, 2 as `prio` FROM `mail_forwarding` WHERE `server_id` = {server_id} AND `source` = '%s' UNION SELECT `greylisting`, 3 as `prio` FROM `mail_forwarding` WHERE `server_id` = {server_id} AND `source` = '@%s' ORDER BY `prio` ASC LIMIT 1) as rules WHERE rules.greylisting = 'y'
+
 hosts = {mysql_server_ip}
\ No newline at end of file

interface/web/mail/form/mail_domain_catchall.tform.php

@@ -131,6 +131,12 @@ $form["tabs"]['catchall'] = array (
 			'default' => 'y',
 			'value'  => array(0 => 'n', 1 => 'y')
 		),
+		'greylisting' => array (
+			'datatype' => 'VARCHAR',
+			'formtype' => 'CHECKBOX',
+			'default' => 'n',
+			'value'  => array(1 => 'y', 0 => 'n')
+		),
 		//#################################
 		// ENDE Datatable fields
 		//#################################

interface/web/mail/lib/lang/de_mail_domain_catchall.lng

@@ -8,4 +8,5 @@ $wb['domain_error_regex'] = 'Ungültiger Domainname oder ungültige Zeichen im D
 $wb['limit_mailcatchall_txt'] = 'Die maximale Anzahl an Catchall Einträgen für Ihr Konto wurde erreicht.';
 $wb['source_txt'] = 'Quelle';
 $wb['destination_error_isemail'] = 'Das Ziel ist keine gültige E-Mail Adresse.';
+$wb['greylisting_txt'] = 'Aktiviere Greylisting';
 ?>

interface/web/mail/lib/lang/en_mail_domain_catchall.lng

@@ -9,4 +9,5 @@ $wb["limit_mailcatchall_txt"] = 'The max. number of email catchall accounts for
 $wb['domain_txt'] = 'Domain';
 $wb["source_txt"] = 'Source';
 $wb['destination_error_isemail'] = 'Destination is no valid email address.';
+$wb['greylisting_txt'] = 'Enable greylisting';
 ?>

interface/web/mail/templates/mail_domain_catchall_edit.htm

@@ -14,6 +14,12 @@
             <div class="form-group">
                 <label for="destination" class="col-sm-3 control-label">{tmpl_var name='destination_txt'}</label>
                 <div class="col-sm-9"><input type="text" name="destination" id="destination" value="{tmpl_var name='destination'}" class="form-control" /></div></div>
+            <div class="form-group">
+                <label class="col-sm-3 control-label">{tmpl_var name='greylisting_txt'}</label>
+                <div class="col-sm-9">
+                    {tmpl_var name='greylisting'}
+                </div>
+            </div>
             <div class="form-group">
                 <label class="col-sm-3 control-label">{tmpl_var name='active_txt'}</label>
                 <div class="col-sm-9">