Unmasking Lazy Gatekeepers: What 12 Million SPF Records ...
Jun 12, 2025 · Recent research by email security experts at Technische Universität Berlin reveals how millions of domains worldwide are undermining their email authentication through widespread SPF …
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SPF - SPF Syntax Check
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A quiet Google update just made SPF more forgiving
In December, Google adjusted something deep in its email infrastructure. It was not announced widely and it did not come with action items. Most teams will never notice it happened. Yet for anyone who …