Cesar Builds Security

Can someone send email pretending to be your business?

Type your domain. In about ten seconds you will see what the internet can already see: your email protection and your website’s security settings.

Free. No signup. We only read public records and load your home page once. We never log in, scan ports or change anything.

What this check does, and does not do

It reads

  • Your public DNS records: SPF, DKIM, DMARC and mail servers
  • Your website’s HTTPS certificate and security headers
  • One request to your home page, like any visitor

It never

  • Logs in, guesses passwords or scans ports
  • Tests forms, files or anything behind a login
  • Stores your results. Your email is saved only if you ask us to write to you