Ready to Test
Enter a domain to perform a live SMTP test. Our backend will fetch the MX records and simulate an actual TCP connection on Port 25 to verify server availability.
MX Records Tools
Perform live SMTP tests on your MX records. Simulate physical TCP connections on Port 25, verify server reachability, bypass firewalls, and get an actionable availability grade.
Enter a domain to perform a live SMTP test. Our backend will fetch the MX records and simulate an actual TCP connection on Port 25 to verify server availability.
Go beyond simple DNS lookups. Our advanced tool actively simulates TCP connections to your mail servers on Port 25 to verify that they are truly reachable and ready to accept incoming emails.