SPF
Lists the servers allowed to send email for your domain. Without it, anyone's server looks as valid as yours.
Home Free scan
Free tool · 10 secondsCan someone send email pretending to be you?
Check any domain for email spoofing and basic DNS health. It runs in your browser, and nothing is stored.
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A snapshot of public DNS records, not a full security audit. It can't see your website code or your mailbox settings. For speed and SEO, try Google PageSpeed Insights.
What we check
The records that decide who can use your name
DKIM
Signs each email, so receivers can tell it really came from you and wasn't changed.
DMARC
Tells receivers what to do with email that fails those checks. This is what actually stops people pretending to be you.
Mail server
Whether your domain can receive email, and which provider handles it.
Domain and website
Whether your domain and its www address resolve to a server.
DNSSEC and CAA
Two optional extras that protect your DNS answers and limit who can issue your certificates.
FAQ
Questions about the scan
Is this safe to run on any domain?
Yes. It only reads public DNS records, the same ones every mail server reads. It doesn't touch your website or your mailbox.
Do you keep what I type?
No. The scan runs in your browser and we never see it. To look up the records, your browser asks Cloudflare's public DNS service, or Google's as a backup.
Why does it say DKIM wasn't found when I have it?
DKIM keys live under a name your email provider picks, and DNS can't list them. We try the common names, so a miss can be a false alarm. Your email provider's settings will confirm it.
What does a low score mean?
It means someone may be able to send email that looks like it came from you, or that your own email is more likely to land in spam. Most fixes take minutes once you know what to change.
Can you fix it for us?
Yes. Send us the result and we'll tell you what to change. It's usually a few DNS records.
Fix it
Want us to fix what the scan found?
Send us the result. It's usually a few DNS records, and we'll tell you exactly which ones.
hello@operandalabs.com
Lahore · Dubai · Finland · working worldwide