Enable DMARC policy for letsencrypt.org

Having SPF and DKIM is a great first step. But I would recommend also adding a DMARC policy to letsencrypt.org. This will provide stronger enforcement of the SPF/DKIM settings as well as provide insight into any malicious users attempting to spoof letsencrypt.org emails by having a reporting URI.


Reporting mode is a good idea! So far I’ve had bad experience with enforce mode. I had many emails to a listserv go silently into people’s spam folders because @eff.org had DMARC enabled. :frowning:

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