Category: Email Security
Articles about email security — protection against phishing, spoofing, compliance requirements, and best practices.
What Is DANE and How It Secures Email Transport
DANE verifies mail server TLS certificates directly via DNS and DNSSEC. Learn how TLSA records work, how to deploy DANE, and how it compares to MTA-STS.
· 8 min read
ARC — Email Authentication Across Forwarding
ARC (Authenticated Received Chain) preserves email authentication results across forwarding hops. Learn how ARC works and when to deploy it.
BIMI — How to Display Your Brand Logo in Emails
BIMI lets you display your brand logo in recipients' email clients. Learn how to set up BIMI, the requirements, and which clients support it.
Email Bounce Rate — What It Is, Types, and How to Reduce It
Bounce rate measures the percentage of undelivered emails. Learn the difference between hard and soft bounces, acceptable thresholds, and how to…
Google and Yahoo Email Sender Requirements
Google and Yahoo require SPF, DKIM, and DMARC authentication from email senders. Learn the specific requirements, thresholds, and enforcement…
MTA-STS and TLS-RPT — Securing Email Transport
MTA-STS enforces encrypted TLS connections for inbound emails and prevents downgrade attacks. Learn how to deploy MTA-STS and TLS-RPT step by step.
NIS2 and Email Security — What the Directive Requires
NIS2 transforms email authentication from best practice to legal obligation. Learn which requirements apply to SPF, DKIM, DMARC, and email encryption.
Setting Up SPF, DKIM and DMARC at Czech Hosting Providers
Complete guide to setting up SPF, DKIM and DMARC at WEDOS, Forpsi and Active24. Exact DNS records, activation steps and troubleshooting for each…
How to Set Up SPF, DKIM, and DMARC for Google Workspace
Step-by-step guide to setting up SPF, DKIM, and DMARC for Google Workspace. From DNS records to DKIM activation in Admin console and DMARC deployment.
Setting Up SPF, DKIM, and DMARC for Microsoft 365
Complete guide to setting up SPF, DKIM, and DMARC for Microsoft 365. Step-by-step from DNS records through DKIM activation in the Defender portal to…
Sender Reputation — What It Is and How to Improve It
Sender reputation determines whether your emails reach the inbox or land in spam. Learn what affects it, how to check it, and how to systematically…
SPF, DKIM, and DMARC — Complete Email Authentication Guide
SPF, DKIM, and DMARC form three layers of email authentication. Learn how they work together, the correct deployment order, and common mistakes to…