All Business Technologies Email Security Check Talk to ABT

Free live DNS check no sign-up to scan

Can someone send email as your company?

Enter your domain. In about ten seconds we check the records that stop impersonation (SPF, DKIM, DMARC, MTA-STS and DNSSEC), grade them A to F in plain English, and hand you the exact DNS records to fix what's missing.

Try one: See a sample PDF report

Why it matters

$2.77B

Business email compromise

Reported losses to business email compromise in 2024, the second-costliest crime type the FBI tracked. Many schemes start with a message that looks like it came from you or your vendor.

FBI IC3, 2024 Internet Crime Report
5,000/day

The big inboxes now require it

Since February 2024, Gmail requires SPF or DKIM from every sender, and SPF, DKIM and DMARC from anyone sending 5,000+ messages a day. Yahoo and Outlook.com have similar rules.

Google email sender guidelines · Yahoo · Microsoft
p=reject

The setting that stops spoofing

DMARC at p=none only watches. Spoofed mail is refused only at p=reject (or sent to spam at p=quarantine). U.S. federal agencies were directed to reach p=reject under CISA BOD 18-01.

RFC 7489 · CISA BOD 18-01
  1. 01

    Enter your domain

    The part after the @ in your work email. Nothing to install, no access to your mailbox.

  2. 02

    We check public DNS, live

    The same records every receiving mail server reads, queried over encrypted DNS from your browser.

  3. 03

    Get your grade and fixes

    An A–F grade, what each check means, and copy-paste DNS records for your IT person or registrar.

Reads public DNS only. We never touch your mailbox or send test emails.

Provided by All Business Technologies. Not affiliated with Google, Yahoo, Microsoft or any email provider.