Are MX records pointing to the right mail servers - before inbound email stops arriving.
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Priority-ordered MX hostnames for your domain
Whether MX records resolve correctly
How incoming mail reaches your domain
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Mail server records explained
When MX records point to the wrong host or disappear after a DNS edit, inbound mail bounces silently - often before anyone checks the mail server logs.
An MX lookup queries DNS for Mail Exchange records and priority values that tell senders which servers receive email for a domain. A free MX lookup shows the live routing configuration.
Run a check after switching email providers or editing DNS. Add domains to TotalSiteControl monitoring for alerts when MX records change unexpectedly.
Start free monitoring with email alerts. No credit card required.
See which mail servers handle a domain in under a minute - no account needed.
Type the email domain, for example yourdomain.com. That is the part after @ in addresses.
Click the lookup button. We fetch MX records and priorities published in public DNS.
Confirm the hosts and priorities match your mail provider. Fix mismatches before users report bouncing mail.
Why mail stops after provider or DNS changes.
Senders cannot find a mail host. Messages bounce or queue until records appear.
Add the exact MX hostnames and priorities from your mail host, wait for TTL, then re-check.
Some mail still goes to a previous provider after a migration.
Keep only current provider hosts, lower TTL before cutover, and verify with a fresh MX lookup.
Backup hosts receive mail first, or a deprecated host has a lower preference number than primary.
Lower numbers are tried first. Align priorities with your provider’s recommended order, then re-check.
Certificate, DNS, and reachability history in one place.
Checks run from our servers - the same path users hit.
Turn a one-off check into monitoring in under a minute.
External probes so internal network blind spots do not hide issues.
Email and Telegram when something fails or is about to expire.
Start free - no credit card required to begin monitoring.
Start free monitoring with email alerts. No credit card required.
Keep mail routing boring and predictable.
Provider switches fail quietly when old MX linger. Confirm public DNS matches the new host.
MX alone does not authenticate mail. Pair this tool with SPF and DKIM checks.
Lookup the domain people send to, not an arbitrary subdomain, unless that subdomain has its own mail.
Unexpected MX edits are a common hijack and misconfig signal. Alerts help you react fast.
It queries DNS for Mail Exchange records that tell the internet which servers receive email for a domain.
Yes. Check any public domain instantly - no signup, no credit card, and no limit on one-off lookups.
Wrong or missing MX records are a common cause - inbound mail never reaches your provider servers until DNS is fixed.
Lower numbers are tried first. Higher numbers are backups used when the primary mail server is unavailable.
For redundancy - if one mail server is down, senders try the next priority until one accepts the message.
Yes - run a lookup after migration to confirm MX points to your new provider hostnames, not the old mail server.
Yes. MX routes incoming mail; SPF and DKIM authenticate outgoing mail. Check all three for reliable delivery.
After email provider changes or DNS edits. Monitoring alerts when MX records change unexpectedly.