What DMARC alignment actually breaks
· 3 min read
Your SPF passes, your DKIM passes, and DMARC still fails. The reason is alignment, and it is the part almost nobody configures deliberately.
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Written from the product. Every check type here exists because something it catches went wrong for somebody first.
A certificate you didn't order
· 3 min read
Certificate Transparency logs every certificate ever issued for your domain, publicly. Reading them tells you things no SSL check can.
Read →Why the alert ladder is five rungs
· 3 min read
One alert is missed. Daily alerts get muted. The interesting design question in expiry monitoring is not whether to alert, but how many times.
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