No MX record on your domain

What it means

MX (Mail Exchanger) records are DNS records that say which servers receive email for your domain. When someone writes to contact@yourdomain.com, their server looks up your MX records to know where to deliver it.

Your domain has none, or its MX records point to names that do not exist.

Why it matters

• Nobody can email you: replies to your emails are lost.
• Bounce messages (delivery failures) cannot reach you, so you never learn about problems.
• Some receivers distrust senders whose domain cannot receive email, and may filter their messages.

How to check

Type your domain in the Domain scanner at /domain-scanner. The MX section lists your mail servers and checks that each one has an address.

How to fix it

1. Find your email provider's MX values. They are in its setup instructions or admin console.
2. Open your DNS provider (often where you bought the domain).
3. Remove old or wrong MX records, for example from a previous host.
4. Add the new MX records with the priority given by your provider. A lower number means higher priority.

Google Workspace

Google now uses a single MX record:

yourdomain.com  MX  1  smtp.google.com

Older setups with aspmx.l.google.com and several alternates still work.

Microsoft 365

The value is unique to your domain and shown in the Microsoft 365 admin center under Settings, Domains. It usually looks like this:

yourdomain.com  MX  0  yourdomain-com.mail.protection.outlook.com

Your web host or another provider

Hosting companies (OVH, IONOS, Hostinger…) give their own MX values in their email setup page. Copy them exactly.

Common mistakes

• An MX must point to a name, never directly to an IP address.
• That name must have an A (or AAAA) record. If it does not resolve, nobody can deliver to you.
• Do not point an MX to a CNAME.
• Some DNS providers add your domain automatically: check the final value does not end with your domain twice.

Domains that only send, or never use email

If a domain truly must not receive email, you can publish a "null MX", which clearly says so:

example.com  MX  0  .

Be aware that replies and bounces will then fail. For a domain you send from, a working MX is better.

Check that it is fixed

DNS changes are not instant. Most are visible within a few minutes, but some providers take up to 24 to 48 hours.

Run the Domain scanner again: your mail servers should be listed with their addresses. Then send an email to your domain from another mailbox and confirm it arrives.