Check MX records and email server configuration for any domain
Enter a domain name to check its MX (Mail Exchange) records and email server configuration
MX Lookup is a DNS diagnostic tool that queries Mail Exchange (MX) records for any domain. MX records are essential DNS entries that direct email traffic to the correct mail servers, ensuring reliable email delivery for your domain.
Our tool provides instant, accurate results by querying authoritative DNS servers (Cloudflare 1.1.1.1 and Google 8.8.8.8), giving you complete visibility into your email server configuration.
Instant DNS queries with millisecond precision using enterprise-grade DNS servers
Powered by Cloudflare and Google DNS infrastructure for accurate, trustworthy data
Complete MX record details including priority, mail servers, and IP addresses
No registration, no limits, no hidden costs - unlimited lookups anytime
Type the domain you want to check (e.g., example.com) in the search box
Press the "Lookup" button or hit Enter to query DNS servers
Instantly see all MX records, priorities, mail servers, and IP addresses
Verify your domain's email server setup is correct before going live
Diagnose email delivery problems and identify configuration issues
Confirm DNS propagation after changing email providers or mail servers
Review email infrastructure for security compliance and best practices
Research email service providers used by other organizations
Understand DNS and email routing for training and certification
MX (Mail Exchange) records are DNS entries that specify which mail servers handle email for a domain. They act as a routing system, directing incoming emails to the correct destination servers.
Priority values (0-65535) determine the order mail servers are contacted. Lower numbers indicate higher priority. If the primary server (lowest priority number) is unavailable, email is routed to the next server in line.
Multiple MX records provide redundancy and load balancing. If your primary mail server goes down, secondary servers ensure email continues to be delivered without interruption.
Check MX records after any email configuration change, when troubleshooting delivery issues, or during DNS migrations. Regular audits (quarterly) help ensure continued email reliability.
Always configure at least two MX records with different priorities for email redundancy
Regularly audit MX records to detect unauthorized changes that could indicate DNS hijacking
Use mail servers geographically close to your users for faster email delivery
Wait 24-48 hours after DNS changes before confirming full propagation globally
Powered by Cloudflare and Google DNS infrastructure for accurate, reliable results
