Best SPF Flattening Tools
ID: c1335a2d-16e1-56f9-9450-4d615ab27ad1
STIX ID: report--c1335a2d-16e1-56f9-9450-4d615ab27ad1
Feed Name: Security Boulevard
This EasyDMARC blog post explains SPF flattening—resolving nested include mechanisms into direct IP entries—to help domains stay within SPF's 10 DNS lookup limit; it compares tools (EasySPF, spFlat, Uptimo SPF Engine), outlines best practices, maintenance considerations, and an FAQ about when to use or avoid flattening.
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