Free tool
MX Lookup
MX record lookup & mail server checker
Check MX records for any domain in real time. This free MX record lookup tool shows mail exchange priorities, hostnames, and IPv4 addresses. Use it as an email DNS checker to verify hosting and troubleshoot delivery.
MX record lookup for any domain
An MX lookup retrieves mail exchange records from DNS, the settings that route email to the correct mail server. Use this MX record checker to confirm configuration, find your email provider, or diagnose "no MX record found for domain" errors before they affect deliverability.
How to check MX records
- Enter a domain name (website URL or bare domain).
- Select a DNS server: Google, Cloudflare, OpenDNS, Quad9, Yandex, or Authoritative DNS.
- Click Check MX record to run the MX record test.
- Review priority, hostname, and IP for each mail exchange record.
Email hosting and mail server lookup
Wondering who hosts my email or who is my email provider? MX records reveal the mail servers handling inbound mail, whether Google Workspace, Microsoft 365, Zoho, or custom SMTP hosts. This email host lookup and mail server lookup tool helps admins validate DNS after migrations, SPF/DKIM setup, or registrar changes.
DNS checker for MX records
MX records live alongside A, AAAA, and TXT records in your domain's DNS zone. Our DNS MX lookup queries live resolvers so you see what the internet returns right now. That is useful when comparing Google vs Cloudflare views or checking DNS propagation after updates.
Consulta MX y registro MX
Herramienta gratuita para consultar MX y verificar registros MX de cualquier dominio. Comprueba el servidor de correo, prioridad y dirección IP. Ideal para administradores que necesitan un registro mx confiable sin instalar herramientas de línea de comandos.
MX kaydı sorgulama
MX kaydı sorgulama ile alan adınızın posta sunucusu kayıtlarını anında görün. German speakers can use this tool for MX Abfrage and MX Eintrag prüfen. Free, browser-based, no registration.
Frequently asked questions
What is an MX record?
An MX (mail exchange) record is a DNS record that tells sending mail servers which hostnames accept email for a domain. Each MX record has a priority and a mail server hostname. Lower priority numbers are preferred first.
How do I check MX records for a domain?
Enter your domain (e.g. example.com), choose a DNS resolver (Google, Cloudflare, OpenDNS, Quad9, Yandex, or Authoritative DNS), and click Check MX record. Results show priority, mail server hostname, and resolved IPv4 addresses.
Why is MX record lookup important?
Incorrect or missing MX records cause email delivery failures. Checking MX records helps verify email hosting, troubleshoot routing, validate migrations, and confirm your domain is configured for reliable inbound mail.
Can a domain have multiple MX records?
Yes. Domains often have multiple MX records with different priorities for redundancy and load balancing. If the primary mail server is unavailable, senders try the next lowest priority value.
What is MX priority / preference?
MX priority (also called preference) is the number before the mail server hostname. Lower numbers mean higher priority. For example, priority 10 is tried before priority 20.
Is this MX lookup tool free?
Yes. This free MX checker requires no account and no download. Look up MX records for as many domains as you need.
More free tools
Browse all free tools for makers and creators.
Part of What Launched Today. Discover new startups every day.