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DNS & Email Security Insights

Expert guides, best practices, and the latest insights on email deliverability, DNS security, and protecting your domain infrastructure.

Latest Articles

DNS record types and security checks
DNS Security16 min

How to Set Up Gmail MX Records on GoDaddy for Email Delivery

Configure Gmail MX records on GoDaddy for optimal email delivery. This guide provides precise instructions for DNS management and validation.

June 2, 2026Read more
Email authentication audit workflow
DNS Security18 min

Demystifying the DKIM Signature: Your Guide to Email Security

Master the DKIM signature for robust email authentication. Understand configuration, implementation, and verification to prevent spoofing and enhance deliverabi

June 1, 2026Read more
DKIM key generation and DNS record setup
Email Security3 min

How to Generate a DKIM Key the Safe Way (2026)

Most online DKIM generators create your private key on their server. Here is how to generate one safely in your own browser, publish the DNS record, and verify it passes.

May 31, 2026Read more
Email authentication audit workflow
DNS Security16 min

How to Check Email DKIM Records for Enhanced Deliverability

Verify email DKIM records for authentication and deliverability. Learn to check DKIM, troubleshoot issues, and implement advanced strategies.

May 31, 2026Read more
Email authentication audit workflow
DNS Security20 min

Choosing the Right DMARC Providers for Your Business in 2026

Evaluate DMARC providers for 2026. Understand evolving requirements, core functionality, and key differentiators for effective email security and brand protecti

May 30, 2026Read more
DNS record types and security checks
DNS Security18 min

Mastering Microsoft 365 MX Records: A Comprehensive Guide for Domain Connection

Master Microsoft 365 MX records for optimal email deliverability. This guide details configuration, troubleshooting, and management for robust email routing.

May 29, 2026Read more
Distribution of DNS and email security grades across 880 scanned domains
DNS Security6 min

What 880 Domain Scans Reveal: Most Fail DNS & Email Security

Real aggregate data from 880 domains scanned with IntoDNS.ai: 86% score D or F overall, .nl domains clearly outscore .com, and web/security configuration is the weakest area across the board. Every figure is computed live from our scan database.

May 29, 2026Read more
Email deliverability and SMTP testing workflow
DNS Security16 min

Quickly Perform an Email MX Check for Your Domain's Deliverability

Perform an email MX check to verify domain deliverability. Ensure correct mail server configuration and routing for reliable inbound email.

May 28, 2026Read more
We Scanned 3,000+ Domains: 60% Score D or F on Email + DNS Security
DNS Security7 min

We Scanned 3,000+ Domains: 60% Score D or F on Email + DNS Security

Aggregate data from 3,000+ public IntoDNS scans and a 1,500-organisation baseline: 60% score D or F overall, 95% publish SPF but only 59% enforce -all, and most

May 28, 2026Read more
DNS record types and security checks
DNS Security22 min

Comprehensive Google MX Records List: A Guide for Setup and Management

Access the definitive google mx records list for Google Workspace setup and management. Essential for robust email delivery and authentication.

May 27, 2026Read more
DNS record types and security checks
DNS Security21 min

Mastering Google Workspace MX Records: A Comprehensive Guide for Seamless Email Delivery

Configure Google Workspace MX records for optimal email delivery. Ensure SPF, DKIM, and DMARC alignment for robust email authentication and security.

May 26, 2026Read more
NIS2 Article 21.2 mapped to DNS, mail authentication and TLS evidence
NIS28 min

NIS2 Article 21.2 — The DNS Evidence Layer Explained

Article 21.2 of NIS2 lists ten cybersecurity risk-management measures. Most readiness write-ups stop at policy language. This one walks through each measure and shows which DNS, mail-authentication and TLS controls map onto it — and how to verify the evidence in five minutes.

May 26, 2026Read more
AI agent running a NIS2 quickscan via MCP
MCP7 min

NIS2 Quickscan via MCP: Let Your AI Agent Audit Domain Compliance

Combine the Model Context Protocol with the IntoDNS NIS2 scoring engine: your AI agent can now run a full Article 21.2 readiness audit on any domain and explain every finding with concrete fix steps.

May 26, 2026Read more
Cobytes ISO 27001 certified — IntoDNS.ai scanner origins
About7 min

Why a Dutch ISO 27001 Hosting Provider Built IntoDNS.ai — and What 1,500 Scans Told Us

We are Cobytes — an ISO 27001 certified Dutch managed hosting and security firm. We built IntoDNS.ai because the existing DNS health tools could not produce the evidence our compliance customers were being asked for. This is what we learned from the first 1,500 scans.

May 26, 2026Read more
SPF record generator and validation flow
DNS Security20 min

Mastering Your Google Workspace SPF Record: A Comprehensive Setup Guide

Configure your Google Workspace SPF record for robust email authentication. This guide details essential setup, sender authorization, and validation procedures.

May 25, 2026Read more
Email authentication audit workflow
DNS Security20 min

How to Create a DMARC Record: A Step-by-Step Guide

Create a DMARC record with this comprehensive guide. Implement robust email authentication, policy enforcement, and reporting for enhanced domain security.

May 24, 2026Read more
Email authentication audit workflow
DNS Security21 min

Choosing the Right DMARC Providers: A 2026 Buyer's Guide

Evaluate DMARC providers for 2026. This guide details essential features, selection criteria, and rollout strategies for robust email authentication.

May 23, 2026Read more
SPF record generator and validation flow
DNS Security22 min

Mastering Your o365 SPF Record: A Complete Setup Guide for Email Security

Master your o365 SPF record with this comprehensive setup guide. Ensure robust email security by correctly configuring SPF for Exchange Online and beyond.

May 22, 2026Read more
DNS record types and security checks
DNS Security21 min

Mastering MX Record Google Workspace Setup for Seamless Email Delivery

Configure MX record Google Workspace for optimal email delivery. Master SPF, DKIM, and DMARC for robust email authentication and security.

May 21, 2026Read more
DNS record types and security checks
DNS Security22 min

Mastering Microsoft 365 MX Records: A Comprehensive Guide

Master Microsoft 365 MX records. Configure SPF, DKIM, DMARC, and MTA-STS for robust email security and deliverability. Essential guide for administrators.

May 20, 2026Read more
Email authentication audit workflow
DNS Security23 min

Unlock Secure Emails: A Comprehensive Guide to DKIM Verification

Master DKIM verification for robust email authentication. This guide details DKIM fundamentals, implementation, and troubleshooting for senior engineers.

May 19, 2026Read more
DNS record types and security checks
DNS Security21 min

Mastering Google Workspace MX Records: A Step-by-Step Guide for Seamless Email Delivery

Configure Google Workspace MX records for optimal email delivery. This guide details DNS setup, verification, and troubleshooting for seamless mail flow.

May 18, 2026Read more
Email authentication audit workflow
DNS Security21 min

Demystifying DKIM Selectors: Your Guide to Understanding and Implementation

Master DKIM selectors: understand their role, identify active selectors, and implement best practices for robust email authentication. Essential for DNS/email s

May 17, 2026Read more
Email authentication audit workflow
DNS Security21 min

GoDaddy DKIM Setup: A Comprehensive Guide for Enhanced Email Deliverability

Master GoDaddy DKIM setup for enhanced email authentication. This guide details DKIM implementation, record generation, GoDaddy DNS integration, and key managem

May 15, 2026Read more
Email authentication audit workflow
DNS Security20 min

Mastering Your DMARC Record on GoDaddy: A Step-by-Step Guide

Implement and manage your DMARC record on GoDaddy with this expert guide. Ensure robust email authentication and prevent spoofing.

May 14, 2026Read more
DNS record types and security checks
DNS Security28 min

Understanding and Configuring Gmail MX Records for Your Domain

Configure Gmail MX records and essential email authentication (SPF, DKIM, DMARC) for robust domain security and deliverability. Essential for Google Workspace.

May 13, 2026Read more
SPF record generator and validation flow
DNS Security18 min

Understanding SPF: The Crucial Differences Between -all and ~all

Understand SPF -all hard fail versus ~all soft fail, when to use each policy, and how to avoid breaking legitimate mail.

May 12, 2026Read more
Email authentication audit workflow
DNS Security24 min

Unlock Email Security: Essential DMARC Monitoring Services for 2026

Implement essential DMARC monitoring services for 2026. Ensure robust email authentication, threat detection, and brand protection. Essential for enterprise sec

May 11, 2026Read more
DNS record types and security checks
DNS Security25 min

Mastering Your Emails: A Comprehensive Guide to Using an Email Header Analyzer

Master email header analysis with our comprehensive guide. Learn to use an email header analyzer for authentication, deliverability, and threat detection.

May 10, 2026Read more
Email authentication audit workflow
DNS Security19 min

Mastering DMARC Record Setup with GoDaddy: A Comprehensive Guide

Master DMARC record setup on GoDaddy. This guide details essential configurations, staged rollout, and advanced settings for robust email authentication.

May 9, 2026Read more
DNS record types and security checks
DNS Security18 min

How to Quickly Verify MX Record for Your Domain

Verify MX record configuration for optimal email delivery. This guide details advanced validation techniques and troubleshooting for DNS professionals.

May 8, 2026Read more
Email authentication audit workflow
DNS Security21 min

How to Check Your DKIM Record for Email Authentication Success

Verify your DKIM record configuration for email authentication. This guide details methods to check DKIM records, interpret validation results, and troubleshoot

May 7, 2026Read more
DNS troubleshooting workflow
DNS Security22 min

Effortlessly Create Digital Signature: Your Step-by-Step Guide

Implement BIMI, SPF, DKIM, DMARC, and VMC to create digital signature for enhanced email authentication and brand integrity. Expert guide.

May 6, 2026Read more
Email authentication audit workflow
DNS Security20 min

Understanding DMARC RUA Reports: A Comprehensive Guide

Master DMARC RUA reports for email security. Analyze aggregate data to identify legitimate senders, detect spoofing, and enhance domain protection. Essential fo

May 5, 2026Read more
SPF record generator and validation flow
DNS Security24 min

Understanding SPF Flattening: Causes, Consequences, and Solutions

Understand SPF flattening: causes, consequences, and solutions. Essential for maintaining email authentication and avoiding permerrors.

May 4, 2026Read more
DNS record types and security checks
DNS Security23 min

Unlock Email Secrets: Your Guide to Using a Mail Header Analyser

Utilize a mail header analyser to verify email authentication, diagnose deliverability issues, and enhance your organization's security posture. Essential for s

May 3, 2026Read more
DNS record types and security checks
DNS Security24 min

Unlock Email Secrets: Your Guide to Using an Internet Header Analyzer

Analyze internet header analyzer functionality, email authentication, and delivery issues. Essential for DNS/email security engineers.

May 2, 2026Read more
SPF record generator and validation flow
DNS Security22 min

How to Create an SPF Record: A Step-by-Step Guide for Email Authentication

Learn to create an SPF record for robust email authentication. This guide details SPF record functionality, syntax, and validation for enhanced email security.

May 1, 2026Read more
Email authentication audit workflow
DNS Security21 min

How to Check Your DKIM Record: A Step-by-Step Guide

Verify your DKIM record configuration with this comprehensive guide. Learn to locate selectors, validate DNS records, and troubleshoot failures for robust email

April 30, 2026Read more
SPF record generator and validation flow
DNS Security19 min

Effortless SPF Generator: Create Your SPF Record in Minutes

Utilize an SPF generator for accurate SPF record creation. Ensure compliance with DNS lookup limits and proper sender authorization.

April 29, 2026Read more
Email authentication audit workflow
DNS Security9 min

Understanding DMARC RUA Reports: Your Guide to Email Authentication Data

Master DMARC RUA reports for email authentication. Analyze aggregate data, identify unauthorized sources, and enhance your security posture with expert insights

April 27, 2026Read more
DNS troubleshooting workflow
DNS Security23 min

Troubleshooting the '550 5.4.1 Recipient Address Rejected: Access Denied' Email Error

Resolve '550 5.4.1 Recipient Address Rejected: Access Denied' email errors. Expert guide on authentication, reputation, and configuration issues.

April 26, 2026Read more
Email authentication audit workflow
DNS Security19 min

Effortless DMARC Generator: Craft Your Domain's Email Authentication Policy

Utilize our DMARC generator to establish robust email authentication policies. Configure SPF, DKIM, and DMARC for comprehensive domain protection.

April 25, 2026Read more
Email authentication audit workflow
DNS Security21 min

Unlock Email Security: Your Guide to the Best DMARC Reporting Tool in 2026

Evaluate the top DMARC reporting tool options for 2026. This guide provides a technical overview for securing your email infrastructure against spoofing and phi

April 24, 2026Read more
Email authentication audit workflow
DNS Security22 min

Unlock Email Security: Your Comprehensive DMARC Analyzer Guide

Master DMARC analysis with this comprehensive guide. Understand fundamentals, implement strategies, and analyze reports for robust email security. Essential for

April 23, 2026Read more
DNS record types and security checks
DNS Security22 min

Your Ultimate Phishing Link Detector: Safeguard Your Clicks

Utilize our advanced phishing link detector for robust email security. Implement SPF, DKIM, DMARC, and advanced TLS for comprehensive protection.

April 21, 2026Read more
IntoDNS.ai MCP server connecting Claude to DNS and email security scanning
DNS Security4 min

IntoDNS.ai MCP Server: Scan Domains Directly from Claude and Other AI Assistants

The IntoDNS.ai MCP server lets Claude, Cursor, and other AI assistants run live DNS, email security, BIMI, sender-requirement, blacklist, report, and citation checks without leaving the chat. Free, no API key required, available on npm.

April 20, 2026Read more
Feature comparison matrix showing DNS security scanner capabilities across tools
DNS Security11 min

Best DNS Security Scanner for Companies 2026: Buying Guide

A 2026 buying guide for DNS security scanners: the seven must-have checks, enterprise features that matter, pricing models, and red flags to avoid.

April 19, 2026Read more
Grid of 15 DNSBL checks showing mostly clean results with 2 listed entries
Email Deliverability10 min

How to Check If Your Domain Is on Any Email Blacklist (40+ DNSBLs)

How DNSBLs work, the 40+ blacklists worth monitoring, why listings happen, and the step-by-step delisting process that actually works.

April 19, 2026Read more
Six-category capability bars covering DNS, email auth, TLS, reputation, web, DNSSEC
DNS Security11 min

The Complete DNS & Email Security Audit Toolkit for 2026

What a modern DNS and email security audit covers in 2026: six layers, five tool categories, and a workflow that catches drift before incidents.

April 19, 2026Read more
Inbox vs spam folder delivery split showing 92% inbox placement score
Email Deliverability12 min

Free Email Deliverability Test: Check Inbox Placement Without Paying

Seven free methods to test email deliverability and inbox placement: DNS checks, Postmaster Tools, DMARC reports, seed-lists, and when free hits its limits.

April 19, 2026Read more
SPF record generator showing provider checkboxes producing v=spf1 record syntax
Email Deliverability10 min

Free SPF Record Generator: Build a Valid SPF Record in 60 Seconds

Build a valid SPF record in 60 seconds. The RFC 7208 rules, the 10-lookup limit, every mistake we see, and how to verify before you ship.

April 19, 2026Read more
Five-minute email authentication audit timeline with SPF, DKIM, DMARC, alignment checkpoints
Email Deliverability10 min

How to Audit Email Authentication in 5 Minutes: A Practical Guide

A five-minute workflow for auditing SPF, DKIM, DMARC, MTA-STS, and BIMI on any domain — with the exact dig commands and what each check reveals.

April 19, 2026Read more
SPF DKIM DMARC DNSSEC badges converging into unified security check
DNS Security12 min

SPF, DKIM, DMARC & DNSSEC in One Scan: The Unified Security Check

Why one unified DNS and email security scan beats four separate tools: alignment, chain of trust, and the silent failures single-tool checks always miss.

April 19, 2026Read more
Three-tier comparison matrix: Basic, Advanced, Enterprise email authentication audit capabilities
Email Deliverability10 min

Tools to Audit Email Authentication Setup: Full Comparison

What an email authentication audit must include, a feature matrix for comparing tools, and a five-question decision framework for your stack.

April 19, 2026Read more
AI-powered DNS security scanner showing scan results with score, security checks, and AI-generated fix suggestions
DNS Security15 min

We Scanned 1,500+ Dutch Organizations — Here Are the DNS Security Facts

AI-powered DNS and email security scanning combines deterministic checks with AI-generated explanations and copy-paste fixes. Full analysis of SPF, DKIM, DMARC, BIMI, MTA-STS, DNSSEC, and 67 blacklists in under 3 seconds.

April 15, 2026Read more
AI-assisted DNS security scanner dashboard with score, checks, and fix suggestions
DNS Security14 min

AI-Assisted DNS and Email Security Analysis: How Instant Scanning Changes the Workflow

AI-assisted DNS and email security scanning combines deterministic checks with model-generated explanations and copy-paste fixes. Full analysis of SPF, DKIM, DMARC, BIMI, MTA-STS, DNSSEC, and 67 blacklists in under 3 seconds.

April 15, 2026Read more
DNS record types and security checks
DNS Security20 min

Mastering Your Inbox: A Deep Dive into Email Trace Analyzer Tools

Analyze email headers with advanced email trace analyzer tools. Uncover spoofing, trace origins, and enhance forensic investigations. Essential for security pro

April 10, 2026Read more
SPF record generator and validation flow
DNS Security19 min

Troubleshooting Exchange 2016 SPF Check Failures: A Comprehensive Guide

Troubleshoot Exchange 2016 SPF check failures. This guide details SPF record fundamentals, diagnosis, correction, and advanced considerations for robust email a

April 8, 2026Read more
DNS troubleshooting workflow with dig nslookup propagation and record checks
DNS Security19 min

Mastering DNS Troubleshooting: Essential Tools and Techniques

Learn systematic DNS troubleshooting techniques — from tracing resolution paths and debugging propagation issues to validating email authentication records and implementing reliability strategies.

April 7, 2026Read more
DNS monitoring webhook flow into Slack PagerDuty and CI/CD
DevOps4 min

DNS Webhook Monitoring: Automate Security Alerts in Your DevOps Pipeline

Automate DNS security monitoring with webhooks. Get Slack, PagerDuty, or custom alerts when SPF, DKIM, or DMARC breaks.

April 7, 2026Read more
Email deliverability and SMTP TLS testing workflow
DNS Security22 min

How to Perform an SMTP Check on Your Certificate for Secure Email

Step-by-step guide to checking SMTP server certificates: MX record lookup, openssl STARTTLS connection, certificate chain validation, and common failure fixes.

April 6, 2026Read more
DNS security score breakdown by authentication and infrastructure category
DNS Security4 min

How to Monitor Your DNS Security Score for Free

Monitor your DNS and email security score for free. Get alerts when SPF, DKIM, or DMARC breaks. Set up in 30 seconds.

April 6, 2026Read more
DNS record types including MX records for mail server routing
DNS Security19 min

How to Find the Mail Server for Any Domain: A Step-by-Step Guide

Identify the mail server for any domain through MX record queries, command-line tools like dig and nslookup, email header analysis, and autodiscovery protocols.

April 5, 2026Read more
BIMI email client support chart showing logo display without VMC
Email Security5 min

BIMI Without VMC: Which Email Clients Show Your Logo for Free?

You don't need a $1,500 VMC to use BIMI. Apple Mail, Yahoo, and Fastmail show your logo for free. Here's how to start today.

April 5, 2026Read more
BIMI CMC versus VMC certificate comparison with pricing and requirements
Email Security5 min

BIMI Certificates in 2026: VMC vs CMC Pricing and Which One You Need

CMC certificates start at $650/year without trademark. VMC costs $1,499 with trademark. Here's which BIMI certificate you actually need.

April 4, 2026Read more
BIMI setup flow from SPF DKIM DMARC to inbox logo display
Email Security7 min

How to Set Up BIMI for Custom Domain Email Avatars

Step-by-step guide to setting up BIMI on your custom domain so your brand logo appears as an email avatar in Gmail, Apple Mail, and Yahoo.

April 3, 2026Read more
DNS resolution flow from user query to authoritative nameserver response
DNS Security14 min

How to Check DNS Name Servers: A Step-by-Step Guide

Verify and troubleshoot DNS nameserver configuration using WHOIS lookups, nslookup (Windows), and dig (Linux/macOS). Covers DNS propagation, common errors, and manual network adapter verification.

April 1, 2026Read more
DKIM setup as part of an email authentication audit workflow
DNS Security6 min

DKIM Setup Guide: Step-by-Step Configuration for Your Domain

Step-by-step DKIM configuration guide covering key generation, mail server setup with OpenDKIM, DNS TXT record publishing, and signature verification for email authentication.

March 30, 2026Read more
DNS & email security score breakdown across 1,000+ scanned domains
Research8 min

State of DNS & Email Security 2026: We Scanned Over 1,000 Domains

We scanned over 1,000 domains across government, tech, universities, and retail. 60% score D or F. Dutch government leads, security companies underperform.

March 18, 2026Read more
Email spam check flow: SPF, DKIM, DMARC authentication pipeline
Email Deliverability12 min

Why Your Emails End Up in Spam: A Complete Guide to SPF, DKIM, and DMARC

Learn why your emails end up in spam and how to fix it. Complete guide to email authentication with SPF, DKIM, and DMARC for better deliverability.

January 6, 2026Read more
Overview of DNS record types used in enterprise security posture
Enterprise Security10 min

Beyond the Basics: Why Enterprise-Grade DNS Security is Non-Negotiable

Enterprise-grade DNS security with automated diagnostics and API integration. Protect your infrastructure at scale with modern security practices.

January 4, 2026Read more
Factors that drive email sender reputation and deliverability scoring
Email Deliverability8 min

Email Deliverability Scoring: Why Your Message Quality Matters

Understand email deliverability scoring and improve your sender reputation. Real message analysis for better inbox placement and engagement.

January 2, 2026Read more
BIMI setup flow: SVG logo, VMC or CMC certificate, DNS publication
Brand Security15 min

BIMI Implementation: Building Brand Trust Through Email Authentication

Complete guide to BIMI implementation. Build brand trust and improve email engagement with verified logos in recipient inboxes.

December 28, 2025Read more
DNS security webhook flow in a CI/CD pipeline
DevOps11 min

Automating DNS Security Monitoring: API Integration for CI/CD Pipelines

Automate DNS security monitoring with API integration. Integrate DNS checks into your CI/CD pipeline for continuous security validation.

December 25, 2025Read more

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