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• 14:22, 31 August 2023 Sebastian talk contribs created page Controversy around SPF (Created page with "Category:Deliverability Category:Authentication When E-Mail was documented in 1982, E-Mail was meant to be decentralised. The uprise of ISP ISPs, such as Yahoo, Hotmail and Gmail, a few decades later, has defeated this purpose. Recently, In may 2023, the authors of [https://www.ietf.org/rfc/rfc8058.txt RFC 8058] discovered severe flaws in SPF. Big ISP ISPs tend to store all their IPs in a single SPF record. Customers who use their own domain for sending...")