Nameservers
Who answers DNS for the domain, and whether there is more than one of them.
Home / Domain health check
Is your email and domain set up properly?
Nameservers, website address, where your email goes, SPF, DMARC, DKIM and your SSL certificate — checked in one go and explained in plain English. Free, no sign-up, and nothing on your domain is changed.
We look up what the rest of the world can already see. Read-only, every time.
What it checks
Seven things, each answered as right, worth a look, needs attention, or honestly "we could not tell".
Website address
Whether the domain and the www version both lead somewhere.
Where email goes
The MX records, and which provider they belong to.
SPF
Whether anything says which servers may send email as you — and whether it says it correctly.
DMARC
Whether forgeries are dealt with, and whether anyone is reading the reports.
DKIM
Whether we can find a signing key. We say so plainly when we cannot.
SSL certificate
That it covers the address, and how long it has left.
Nothing stored
We do not keep the result, add you to a list, or email you afterwards.
Plain English
Every finding says what it means and what to do, not just a red cross.
About the check
What is SPF, in plain English?
A line in your domain's DNS listing which servers are allowed to send email as you. Without it, more of your mail is treated as suspicious, and anyone can send email that looks like it came from your address.
And DMARC?
SPF and DKIM say what is legitimate. DMARC says what receivers should do when something is not — ignore it, bin it, or quarantine it — and asks them to report back on who is sending as you. Start at "do nothing but tell me", read the reports, then tighten it.
Why does DKIM come back as "we could not tell"?
Because DKIM keys are published under a name only your mail provider knows. We try the common ones, but not finding a key is not proof there is not one. Your provider can tell you in a moment.
Will this change anything on my domain?
No. Everything here is a read: the same public lookups anybody can do, plus the certificate your website already shows every visitor. Nothing is stored against your name and we do not email you off the back of it.
It found problems. Will you fix them?
If you host with us, yes, as part of hosting. If you do not, the report tells you what to change and most providers have a page on how — or ask us and we will talk you through it. We would rather be useful than sell you something you do not need.