MX record presence
Check whether the domain has MX records configured.
100% Free • No Signup • Live DNS
MX Lookup
Check which mail servers receive email for your domain, review MX priority and detect possible email routing issues.
MX records • Mail servers • Priority • Provider detection • DNS lookup • No signup
What this lookup checks
One lookup reviews your domain’s mail routing records and email server configuration.
Mail servers
See which servers are responsible for receiving email.
Priority values
Review MX priority order and backup mail servers.
Provider detection
Identify common mail providers such as Google Workspace, Microsoft 365, Zoho, Yandex or hosting mail.
DNS response
Check whether MX records resolve correctly through DNS.
Email routing readiness
Find issues that may prevent the domain from receiving email.
Common MX issues this tool can detect
Find mail routing problems that can affect incoming email delivery.
- MissingNo MX records found
- DNSMX records point to invalid hosts
- PriorityDuplicate MX priorities
- ResolutionMX host does not resolve
- RoutingOnly backup MX records found
- HostnameMail server hostname is misconfigured
- FormatMX record points directly to an IP address
- DNSMX record points to a CNAME
How MX lookup works
The checker reads DNS MX records and explains how incoming email is routed.
Enter your domain
We clean the input, remove protocol or path, and validate the domain format.
Query MX records
The tool reads mail exchange records published in DNS for your domain.
Review email routing
See mail servers, priorities, provider hints and possible configuration issues.
Understanding MX priority
Lower number = higher priority
Mail servers try the MX record with the lowest priority value first.
Multiple MX records
Multiple records can provide redundancy or route mail through the same provider.
Backup mail servers
Higher priority numbers can act as fallback mail servers.
Same priority values
Servers with the same priority may be used for load balancing.
Priority 10 → tried first
Priority 20 → backup
MX records control where incoming email is delivered. They do not prove that outbound email authentication is configured.
Email authentication next steps
MX records control incoming email. SPF, DKIM and DMARC help authenticate outbound email and protect your domain reputation.
Preparing MX lookup…
Need help fixing mail routing?
Send us your domain report and we’ll review the issue.
Frequently asked questions
An MX record is a DNS record that tells mail servers where to deliver email for a domain.
MX priority controls which mail server is tried first. Lower numbers have higher priority.
Yes. Multiple MX records can provide redundancy or route email through a provider with several mail servers.
If the domain is expected to receive email, missing MX records can be a problem. If the domain does not use email, it may be intentional.
No. MX records should point to hostnames, not directly to IP addresses.
No. The MX Lookup tool is free and does not require signup.