Email Security Blog
Guides, tutorials, and news about email authentication and security.
DANE for Email: What It Is and Why It Matters
DANE pins your mail server's TLS certificate in DNS, preventing man-in-the-middle attacks. Here's how it works alongside DNSSEC.
SPF "Too Many DNS Lookups" — How to Fix It
The SPF 10-lookup limit is the most common email authentication problem we see. Here's how to diagnose it and fix it for good.
TLS-RPT Explained: Monitor Your Email Encryption
TLS-RPT tells you when email encryption fails between servers. Here's what it reports, why it matters, and how to set it up.
DKIM Explained: How Email Signatures Protect Your Domain
DKIM is the piece of email authentication most people skip over. Here's what it does, why it matters for deliverability, and how to set it up correctly.
SPF Record Best Practices for 2026
The most common SPF mistakes we see, and how to fix them before they silently break your email delivery.
Why MTA-STS Matters More Than You Think
Your emails might be traveling unencrypted without you knowing. MTA-STS closes that gap. Here's how.
Nederlands
SPF record instellen: stap-voor-stap handleiding
Een SPF record beschermt je domein tegen ongeautoriseerde verzenders. Zo stel je het correct in, inclusief veelgemaakte fouten.
DMARC rapport lezen: wat betekenen die XML bestanden?
DMARC rapporten zijn onleesbare XML. Hier leer je precies wat erin staat, waar je op moet letten, en hoe MailShield het automatisch verwerkt.
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