this post was submitted on 26 Oct 2024
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Yeah and honestly, this is largely a reasonable standard for anyone running an email server. If you don't have SPF, DKIM and DMARC, basically anyone can spoof your emails and you'd be none the wiser. It also makes spam much harder to send without well, sacrificing IP addresses to the many spam lists. I wouldn't be surprised if some people setting up their own mail server were made aware of these things because of being blocked.