my $header = <<__EOD;
Proxmox message catalog.
Copyright (C) 2011-2017 Proxmox Server Solutions GmbH
-This file is distributed under the same license as the proxmox-mailgateway
-package.
+This file is free software: you can redistribute it and\/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
Proxmox Support Team <support\@proxmox.com>, 2017.
__EOD