https://answer.freetools.me/tags/%E5%8D%8F%E8%AE%AE%E6%BC%94%E8%BF%9B/ Recent content in 协议演进 on Answer Hugo -- 0.152.2 zh-cn Sat, 21 Mar 2026 08:29:54 +0800 https://answer.freetools.me/%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%80%E5%B0%81%E9%92%93%E9%B1%BC%E9%82%AE%E4%BB%B6%E8%83%BD%E9%AA%97%E8%BF%87%E6%89%80%E6%9C%89%E5%AE%89%E5%85%A8%E6%A3%80%E6%B5%8B%E4%BB%8Esmtp%E8%AE%BE%E8%AE%A1%E7%BC%BA%E9%99%B7%E5%88%B0%E7%8E%B0%E4%BB%A3%E8%AE%A4%E8%AF%81%E4%BD%93%E7%B3%BB%E7%9A%84%E5%9B%9B%E5%8D%81%E5%B9%B4%E6%94%BB%E9%98%B2%E5%8D%9A%E5%BC%88/ Sat, 21 Mar 2026 08:29:54 +0800 https://answer.freetools.me/%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%80%E5%B0%81%E9%92%93%E9%B1%BC%E9%82%AE%E4%BB%B6%E8%83%BD%E9%AA%97%E8%BF%87%E6%89%80%E6%9C%89%E5%AE%89%E5%85%A8%E6%A3%80%E6%B5%8B%E4%BB%8Esmtp%E8%AE%BE%E8%AE%A1%E7%BC%BA%E9%99%B7%E5%88%B0%E7%8E%B0%E4%BB%A3%E8%AE%A4%E8%AF%81%E4%BD%93%E7%B3%BB%E7%9A%84%E5%9B%9B%E5%8D%81%E5%B9%B4%E6%94%BB%E9%98%B2%E5%8D%9A%E5%BC%88/ 从1981年SMTP协议的"信任假设"出发，深度解析电子邮件安全四十年演进历程。涵盖SPF、DKIM、DMARC、ARC协议的技术原理，SMTP走私攻击、组合攻击等新型威胁，以及PCI DSS 4.0合规要求。揭示为什么即使部署了完整认证体系，钓鱼邮件依然屡禁不止。