Email DNS Health Check
Run one domain check for MX, SPF, DMARC, DKIM, and sender IP blacklist signals.
Check the records that decide whether a domain can receive mail, authenticate senders, and avoid reputation surprises.
One report for the email DNS foundation
Email delivery problems usually come from a mix of DNS records, authentication alignment, and sender reputation. This health check brings the core signals into one score.
Use it before launching a domain, after changing providers, or when a real message suddenly lands in spam.
Related guides
Why Email Goes to Spam
Common technical reasons legitimate email lands in spam and how to investigate them.
SPF Record Examples for Google Workspace, Microsoft 365, SendGrid, Mailgun, Zoho, and Amazon SES
Copy practical SPF examples and learn how to combine common email providers into one safe TXT record.
DMARC Record Examples for p=none, quarantine, and reject
Compare practical DMARC TXT records for monitoring, gradual enforcement, and strict domain protection.
FAQ
Do I need a DKIM selector?
Yes. DKIM records live under selector._domainkey.example.com, so the checker needs the selector from your mail provider.
Is the blacklist check required?
No. It is optional because it needs a sender IPv4 address from a real email header.