Return to Sender

Everything you ever wanted to know (but were afraid to ask) about email authentication, DMARC, SPF, DKIM, and how they can stop fraud and phishing.

Secure Email Gateways and Email Authentication — Entirely Different Yet Complementary Anti-Phishing…

Secure Email Gateways and Email Authentication — Entirely Different Yet Complementary Anti-Phishing…

The ever-increasing waves of email phishing attacks have spawned a flurry of how-to articles offering advice on how to cope with the threat…

CEO to CFO phishing scams are on the rise. Here’s one we caught in the act.

CEO to CFO phishing scams are on the rise. Here’s one we caught in the act.

by Steve Whittle, ValiMail

ValiMailFeb 124 min read

Marketers Take Note: Gmail Might Turn You Into a Question Mark

Getting email authentication right just…

ValiMailFeb 44 min read

Understanding Email Authentication Headers

Emails look pretty simple at first glance. You have a To, From, Subject, and Body…

ValiMailJan 275 min read

The 4 Most Frequent Email Authentication Mistakes

ValiMailJan 202 min read

Anti-Phishing Warnings from the Government Miss the Point — Again

A criminal is sending out fake…

ValiMailJan 124 min read

Two Common Problems with SPF You’re Probably Overlooking

Sender Policy Framework (SPF) is an open, DNS…

ValiMailJan 54 min read

If DMARC is so great, why isn’t everyone doing it?

Email authentication — verifying that an inbound…

ValiMailDec 21, 20154 min read

Why You Shouldn’t Be Afraid to Insert Email Authentication Into Your DNS

ValiMailDec 11, 20154 min read

DKIM for ESPs: The Struggle of Living Up to the Ideal

Note: A version of this post also appeared on…

ValiMailDec 11, 20154 min read

What Email Authentication Is — And Why It Matters

ValiMailDec 11, 201517 min read

DMARC for Email Service Providers FAQ

Detailed information for ESPs on how to configure DMARC…

Return to Sender

Everything you ever wanted to know (but were afraid to ask) about email authentication DMARC, SPF, DKIM, and how they can stop fraud and phishing.

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