Recommended Security Settings for MDaemon Email Server

This guide outlines recommended security settings for the MDaemon Email Server to enhance protection against spam, malware, hacking, and abuse. It begins by detailing the necessity of SMTP authentication, which requires users to authenticate with a valid username and password for sending emails. The document further explains the use of the IP Shield to associate domains with authorized IP addresses, thereby preventing semi-spoofing. It emphasizes the importance of enabling SSL and TLS for encrypting connections, along with RequireTLS and MTA-STS for secure email delivery. Additional recommendations include using PGP encryption, preventing open relay configurations, and enabling MDaemon AntiVirus for scanning emails. The guide also covers dynamic screening to block suspicious connections, account hijack detection, and location screening to restrict access from unauthorized regions. Finally, it discusses the implementation of SPF, DKIM, and DMARC for email validation and anti-spoofing measures, ensuring a comprehensive approach to email security.