Fixed: Make sure that `Reply-To' header is set, even for system notif…

…ication emails

[ci skip]

CHANGELOG

@@ -29,12 +29,14 @@ DATABASE
     Fixed: Make queries compatible with `only_full_group_by' SQL mode which is par of default modes in MySQL > 5.7
 
 FRONTEND
+
     Added: `onAddIpAddr', `onChangeIpConfigMode' and `onDeleteIpAddr' events (admin level)
     Changed: Listening ports are now 8880 (http) and 8443 (https). (Required by CloudFlare)
     Changed: Frontend is now run through an isolated PHP-FPM Daemon (see errata file)
     Fixed: Customer PHP permissions are not synced with reseller PHP permissions in some contexts
     Fixed: General error: 1366 Incorrect integer value: '_no_' for column 'mail_auto_respond'
     Fixed: IPv6 - Possible duplicate entries - It is possible to add an IPv6 twice (uncompressed and compressed)
+    Fixed: Make sure that `Reply-To' header is set, even for system notification emails
     Fixed: PHP INI entry for main domains must be created even if PHP editor is not enabled
     Fixed: Prevent rollback attempts when not in transaction (iMSCP_Update_Database)
     Fixed: `SELECT' placeholder is not parsed in ip_manage.php (admin level)

gui/library/Functions/Email.php

@@ -421,6 +421,8 @@ function send_mail($data)
         } else {
             $headers[] = 'Reply-To: ' . $data['sender_email'];
         }
+    } else {
+        $headers[] = 'Reply-To: ' . $cfg{'DEFAULT_ADMIN_ADDRESS'};
     }
     $headers[] = 'MIME-Version: 1.0';
     $headers[] = 'Content-Type: text/plain; charset=utf-8';