Documentation
DNS records
2 articles
How SPF flattening works
SPF records break when they need more than ten DNS lookups to evaluate, and the failure often arrives without you changing a thing. This guide explains the ten-lookup limit, walks through the SPF Flattening tab in DMARC Engine click by click, shows how to read the lookup counter, the Include Tree and the flattened IP list, and explains how hosted SPF keeps your record under the limit automatically with a single include.
Read moreUnderstanding your DMARC record
Every field in the DMARC Record Builder explained, from p and sp to rua, ruf, fo and ri, what each one generates, and how to publish the result through a single CNAME so DMARC Engine manages your live record for you.
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