June 16, 2026
DMARC for banks: why financial brands are prime spoofing targets
Banks are among the most impersonated brands, yet many still stop at p=none. Why finance is a prime target, what the data shows, and how to fix it.
Read →Blog — page 7
June 16, 2026
How to get to p=reject without breaking email
A safe, staged path from DMARC monitoring (p=none) to full enforcement (p=reject) — without blocking a single legitimate message.
Read →June 16, 2026
Gmail and Yahoo's sender requirements, explained
Since 2024 Gmail and Yahoo require bulk senders to authenticate with SPF, DKIM and DMARC. Exactly what is demanded, who is affected, how to comply.
Read →June 16, 2026
SPF, DKIM and DMARC: how the three work together
SPF, DKIM and DMARC are not rivals but three stacked layers. What each one does, why alignment ties them together, and how they stop spoofing.
Read →June 16, 2026
How to read DMARC aggregate (RUA) reports
DMARC aggregate reports are the map to enforcement. What's inside the XML, how to read it, and how daily reports turn into a path to p=reject.
Read →June 16, 2026
What is DMARC, and how does it stop email spoofing?
A plain-English guide to DMARC: what it is, how it builds on SPF and DKIM, what the policies mean, and what DMARCbis (RFC 9989) changes in 2026.
Read →June 15, 2026
What is DKIM, and how does it prove an email wasn't tampered with?
DKIM (RFC 6376) explained: the cryptographic signature, the DNS record, selectors, rotation, 1024 vs 2048 bits, and why DMARC is still needed.
Read →June 14, 2026
What is SPF, and how does it authorize sending servers?
A plain-English guide to SPF (RFC 7208): what it is, the DNS record, the include/ip4/a/mx mechanisms, the 10-lookup limit, and why SPF alone isn't enough.
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