Mail servers, SPF, DKIM and DMARC
The same four checks as our SPF, DKIM and DMARC Checker: where your mail goes, which servers may send as you, whether your email is signed, and what receivers do with fakes. Each one gives the exact record to paste.
Is my email domain healthy?
Domain Health Check
One test for everything that decides whether your email works and gets trusted: mail servers, SPF, DKIM, DMARC, DMARC reports, blocklists, name servers and the renewal date. Each one comes with the fix.
- Free, no sign-up
- Nothing you type is stored
- Every rule shows its source
What the check looks at
Each check rests on an email or DNS standard or on Gmail’s published rules for senders. A check that cannot finish is marked Not checked, never failed. No score out of 100.
DMARC reports
A rua= tag in your DMARC record sends you daily reports of who sends email as your domain. Without them you cannot tell when it is safe to tighten your policy.
Blocklists
If you run your own mail server, we look up its address on seven free blocklists. Big providers like Google and Microsoft run shared servers and keep them clean themselves.
Name servers and renewal
A domain should answer from at least two name servers, so one outage does not stop your email. We also read the renewal date from the public registry, because a lapsed domain stops email and the website at once.
Questions
What does a domain health check test?
It checks the parts of your domain that decide whether your email works and gets trusted: your mail servers, SPF, DKIM and DMARC records, whether DMARC reports are turned on, your own mail server on free blocklists, your name servers, and when the domain is due for renewal. Each one is marked Looks good, Double-check, Fix or Not checked, with the fix.
Is this an email domain health check or a website check?
Email. It checks what makes email from your domain trusted and delivered. The name servers and the renewal date matter for your website too, but it does not test website speed or security.
Why do you not check Gmail's or Microsoft's servers on blocklists?
Those are shared servers that Google and Microsoft watch and clean themselves, so a lookup tells you nothing you can fix. If you send through them and still land in spam, the Email Spam Test checks one real email from the exact server it left.
Is a domain health score better than this?
We do not give a score out of 100. A score mixes small notes with real problems. Eight plain marks and one "Do this first" line tell you what to fix, in order.
Do you keep my domain?
No. The domain is only used for this check, through public DNS lookups and the public domain registry, and is not stored or logged. Nothing you type is stored.
Getting DMARC reports? The DMARC Report Analyzer reads them on your device.
Want to test one email? The Email Spam Test checks a real email as it arrives.
Setup passes? Check the words
The Free Sales Email Grader grades your subject and body against published sales research and suggests a rewrite.
Try the Free Sales Email Grader