Mail-in-a-box (MiaB) takes care of all the complicated configurations required to avoid security problems, provides a solid spam detection system and gives you monitoring, reporting and backup mechanisms. It can also set up and automatically renew a Let's Encrypt certificate for your email domains, as well as configuring the detailed DNS configurations needed to ensure your mail server's IP address is trusted by other servers, and less likely to be blacklisted. Mail-in-a-box also incorporates......