Question 1

What is an MX record and what does it do?

Accepted Answer

A Mail Exchange (MX) record is a DNS record that specifies which mail servers are responsible for receiving email for your domain. Each MX record has a priority value — the lower the number, the higher the priority. Receiving servers will try the highest-priority (lowest number) MX first. If it is unavailable, they fall back to lower-priority servers. Incorrectly configured MX records are a common cause of email delivery failures.

Question 2

Why are my emails bouncing with "no MX record" errors?

Accepted Answer

A "no MX record" bounce error means the sending server could not find any MX records for your domain in DNS. This happens when: (1) MX records were never configured, (2) records were accidentally deleted, (3) DNS propagation has not completed after a recent change. Use our MX Lookup tool to check current MX records. If records are missing, add them through your DNS provider — common values are provided by GSuite/Workspace, Microsoft 365, and email hosting services.

Question 3

Is the MX Lookup tool completely free?

Accepted Answer

Yes. The MX Lookup tool is 100% free with no account, credit card, or API key required. Simply enter your domain and get instant results. FreeMailTools.com provides over 200 free email, DNS, and deliverability tools for developers, marketers, and IT professionals.

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