/en/tags/high-availability/Recent content in High Availability on Mi&Bee BlogHugo -- gohugo.ioen蓝宝石的傻话Wed, 10 Jun 2020 00:00:00 +0000/en/posts/architecture/mail-system-architecture/Wed, 10 Jun 2020 00:00:00 +0000/en/posts/architecture/mail-system-architecture/<p>As enterprise digitalization scales up, large organizations demand extreme capabilities from email systems: <strong>independent deployment, high availability, global interoperability, security protection, and load balancing</strong>. This article breaks down the practical architecture of a dedicated large enterprise email system, covering overall design, physical/logical deployment, core service systems, and the full send/receive mail flow, providing a reference technical solution for enterprise-level email architecture implementation.</p> <h2 id="i-overall-system-architecture-design">I. Overall System Architecture Design</h2> <p>Large enterprise email systems adopt a layered architecture of <strong>&ldquo;frontend gateway layer + load balancing layer + core service layer + backend independent mail system&rdquo;</strong>, balancing security isolation, traffic scheduling, and business independence. The overall architecture is as follows:</p>