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20th Feb 2024
DMARC 在子域名上面如何工作 (DMARC sp 标签)?

在本文中,我们来看一下一个比较少讨论到的问题:在子域名的情形下,DMARC 如何工作?

确切地,讨论以下问题:

DMARC 策略发现如何工作? DMARC 策略继承如何工作? 应该使用 sp 标签来保护子域名吗?

在深入下面的 DMARC/子域名情形之前,我们先来介绍组织域名 (organizational domain)。

DMARC 中的组织域名是什么?

组织域名是一个域名的"根域名/顶层域名"。下面是几个域名与它们的组织域名:

域名 组织域名 example…
DMARC Subdomain sp

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