Misconfigured email security is the number-one reason mail lands in spam or your domain gets abused for phishing. This tool checks your SPF, DKIM, DMARC and BIMI records in one go and gives a score from 0 to 3.
What this tool does
The tool fetches the public DNS records of the given domain and evaluates whether each part of email authentication is present and correct. The score summarises how well the domain is protected against spoofing.
How to use it
Enter the domain name (for example yourcompany.com) and run the check. You get an explanation per part with what is fine and what you should change.
Input and output
- Input: a domain name
- Output: presence and status of SPF, DKIM (common selectors), DMARC and BIMI, plus a total score and concrete advice
Limitations
DKIM can only be shown for known selectors; a non-standard custom selector may not be found. The tool reads public DNS only and does not send any test mail.
Good to know
Run this check again after every DNS change, because records are cached and are not visible everywhere immediately. A green score means the basics are right, but check periodically that new senders still pass SPF and DKIM cleanly.