Email DNS guides
Practical guides for fixing domain email problems — from MX, SPF, DKIM, and DMARC to spam placement, forwarding, DNS propagation, domain verification, Google Workspace, Microsoft 365, and Cloudflare setup.
Choose your problem
Provider-specific DNS pages
Google Workspace email DNS checker
Check the public DNS records that matter when Google Workspace Gmail is not receiving, sending, verifying, or passing authentication for a custom domain.
Google Workspace - public DNS checksProvider setupMicrosoft 365 email DNS checker
Check the public DNS records that matter when Microsoft 365 custom-domain email is not receiving, sending, verifying, or authenticating correctly.
Microsoft 365 - public DNS checksProvider setupCloudflare Email Routing DNS checker
Check the public DNS records that matter when Cloudflare Email Routing is not forwarding custom-domain email correctly.
Cloudflare Email Routing - public DNS checksProvider setupZoho Mail email DNS checker
Check the public DNS records that matter when Zoho Mail is not receiving, sending, verifying, or passing authentication for a custom domain.
Zoho Mail - public DNS checksProvider setupProton Mail email DNS checker
Check the public DNS records that matter when Proton Mail is not receiving, sending, verifying, or passing authentication for a custom domain.
Proton Mail - public DNS checksProvider setupNamecheap DNS email setup checker
Check the public DNS records that matter when email for a domain registered or hosted at Namecheap is not working.
Namecheap - public DNS checksProvider setupGoDaddy DNS email setup checker
Check the public DNS records that matter when email for a domain registered or hosted at GoDaddy is not working.
GoDaddy - public DNS checksProvider setupShopify domain email DNS checker
Check the public DNS records that matter when email on a Shopify-managed domain is not receiving or authenticating correctly.
Shopify - public DNS checksProvider setupWix and Squarespace domain email DNS checker
Check the public DNS records that matter when email on a Wix or Squarespace domain is not receiving or authenticating correctly.
Wix and Squarespace - public DNS checksProvider setupFastmail email DNS checker
Check the public DNS records that matter when Fastmail is not receiving, sending, verifying, or passing authentication for a custom domain.
Fastmail - public DNS checksProvider setupTitan Email DNS checker
Check the public DNS records that matter when Titan Email is not receiving, sending, verifying, or passing authentication for a custom domain.
Titan Email - public DNS checksStart here
Business Email Setup Checklist: Domain, DNS, Mailbox, and Authentication Before You Launch
Launch business email correctly with a practical checklist for domain setup, DNS host, MX records, mailboxes, SPF, DKIM, DMARC, forwarding, contact forms, and testing.
Set up business email before launch - 18 minStart hereEmail DNS Checker: What to Check When Domain Email Breaks
Learn how to check nameservers, MX, SPF, DKIM, and DMARC records so you can fix broken domain email without changing the wrong DNS records.
Check domain email DNS records - 14 minAuthenticationSPF vs DKIM vs DMARC: What Each Record Does and Which One to Fix First
Understand SPF, DKIM, and DMARC in plain English, what each record does, how they work together, and which one to fix first based on your email problem.
Compare SPF, DKIM, and DMARC - 17 minStart hereWhich Email DNS Fixes Can Be Automatic (and Why Some Can't)
See which email DNS fixes Domain Email Doctor can apply for you, which ones need your input, and the reason behind each, from SPF and DMARC to DKIM and MTA-STS.
Understand auto-fix vs manual email DNS fixes - 7 minFix receiving and routing problems
MX Record Checker: Fix Email Receiving and Mail Routing Problems
Learn how to check MX records, fix missing or wrong mail routing, remove old email providers, and troubleshoot domain email that is not receiving mail.
Check email receiving and mail routing - 16 minReceivingWebsite Works but Email Does Not: DNS Records to Check First
Website loads but domain email is broken? Learn how to check nameservers, MX records, mailbox setup, SPF, DKIM, and DMARC without breaking your website DNS.
Fix working website with broken email - 18 minForwardingEmail Forwarding Not Working: DNS, MX, Alias, and Mailbox Checks
Email forwarding not working? Learn how to check MX records, forwarding routes, aliases, destination verification, catch-all settings, spam folders, SPF, DKIM, and DMARC issues.
Troubleshoot broken email forwarding - 17 minFix sending, authentication, and spam
SPF Record Checker: Fix Duplicate and Missing SPF Records
Learn how to check whether SPF is missing, duplicated, or outdated, and how to safely merge multiple sending services into one SPF record.
Check or fix SPF records - 14 minAuthenticationDKIM Record Checker: Fix Missing DKIM and Wrong Selectors
Learn how to check DKIM records, understand selectors, fix missing DKIM, and troubleshoot Google Workspace, Microsoft 365, Cloudflare, and third-party sender issues.
Check DKIM records and selectors - 18 minAuthenticationDMARC Record Checker: Add a Safe Policy for Domain Email
Learn how to check whether DMARC is missing, invalid, or too strict, and how to safely roll out p=none, quarantine, or reject.
Check or add DMARC records - 16 minSpamEmail Going to Spam: DNS Records to Check Before Blaming Your Email Provider
Emails going to spam? Learn which DNS records to check first, including SPF, DKIM, DMARC, alignment, PTR, third-party senders, and sender reputation signals.
Troubleshoot spam placement with email DNS records - 19 minSet up Google or Microsoft email
Google Workspace and Cloudflare: Email DNS Setup Checklist
Set up Google Workspace email DNS in Cloudflare with a practical checklist for MX, SPF, DKIM, DMARC, domain verification, Gmail activation, and common setup mistakes.
Set up Google Workspace with Cloudflare - 18 minProvider setupMicrosoft 365 and Cloudflare: Email DNS Setup Checklist
Set up Microsoft 365 email DNS in Cloudflare with a practical checklist for MX, SPF, DKIM, DMARC, autodiscover, domain verification, and common setup mistakes.
Set up Microsoft 365 with Cloudflare - 20 minFix DNS update and verification issues
Email DNS Propagation: Why Your Records Still Look Wrong After Updating DNS
Learn why MX, SPF, DKIM, DMARC, and verification records can still look wrong after DNS updates, and how to tell propagation apart from real misconfiguration.
Understand email DNS propagation and caching - 18 minVerificationDomain Verification Record Not Found: Why Google, Microsoft, or Cloudflare Cannot Verify Your Domain
Google, Microsoft, Cloudflare, or another provider cannot verify your domain? Learn how to fix missing TXT/CNAME records, wrong DNS host, full-domain mistakes, propagation, and proxy issues.
Fix missing domain verification DNS records - 18 minDNS troubleshootingMove Your DNS to Cloudflare (Free) to Unlock One-Click Email Fixes
Move your domain's DNS to Cloudflare's free plan without breaking email or your website, so a scanner with your scoped token can add the exact MX, SPF, and DMARC records in one click.
Move DNS to Cloudflare to enable one-click changes - 9 min