The Postscreen Postfix service can be enabled to filter out undesired SMTP clients on initial connection to the mail server. Postscreen uses certain criteria (static white/blacklist, DNS Block List queries, communication analysis) to allow or deny connections for a given SMTP client.
This role can be used to enable and configure Postscreen in a Postfix installation managed by the debops.postfix Ansible role. It does not configure Postfix directly on its own.
debops.postscreen - Manage Postscreen Postfix service using Ansible Copyright (C) 2017 Maciej Delmanowski <firstname.lastname@example.org> Copyright (C) 2017 DebOps https://debops.org/ This repository is part of DebOps. DebOps is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 3, as published by the Free Software Foundation. DebOps is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with DebOps. If not, see https://www.gnu.org/licenses/.