Question 1

What is an MX record?

Accepted Answer

An MX (Mail Exchanger) record is a DNS entry that tells the internet which mail servers receive email for your domain, and in what priority order. Without valid MX records, your domain cannot receive email.

Question 2

Why does email security need SPF, DMARC and DKIM?

Accepted Answer

SPF lists which servers may send mail for your domain, DKIM cryptographically signs your messages, and DMARC tells receivers what to do when those checks fail. Together they stop attackers from spoofing your domain in phishing emails.

Question 3

Is this MX lookup tool free?

Accepted Answer

Yes. The MX lookup and email security checker is completely free, requires no signup, and runs the same DNS checks as FortifyNet's full security scan.

Free MX Lookup & Email Security Checker