Free · live registry data · no login

MX Record Lookup

Which mail servers receive email for a domain, by priority.

How it works

MX lookup: see exactly where a domain's email is delivered

Enter a domain and we query its MX records live over DNS-over-HTTPS, sort them by priority, resolve each mail server to its IP addresses and name the provider behind them (Google Workspace, Microsoft 365, Zoho, MailShrine and more). You will see at a glance whether mail is routed correctly, whether a backup server exists, and whether anything points at a host that no longer resolves. Nothing is cached; every check hits the live DNS.

Results appear here after you click Look up MX records.

How this works

1
Query MX over DoH
We ask Cloudflare's resolver (Google as fallback) for the domain's MX records and sort them by priority.
2
Resolve each server
Every mail host is looked up for A and AAAA records so you can see whether it is actually reachable.
3
Identify the provider
Hostname patterns reveal Google, Microsoft, Zoho and other common providers.

Frequently asked questions

What is an MX record?: A Mail Exchanger record tells sending servers which hosts accept email for your domain. Each has a priority number; lower numbers are tried first. Without MX records most email to your domain bounces.
Why does the lookup show more than one MX record?: Providers publish several servers for redundancy. If the lowest-priority host is down, senders move to the next one. Equal priorities mean the sender picks one at random to spread load.
Can I have MX records from two different providers?: Technically yes, but mail will be split unpredictably between them and spam filtering breaks. Use one provider's full set of records and remove the old ones when you migrate.
How long does an MX change take to work?: Usually within the record's TTL, often 5–60 minutes. Some resolvers cache longer, so give it up to 24 hours before assuming something is wrong.
Does an MX record affect sending email?: Not directly. Sending is governed by SPF, DKIM and DMARC. However many receivers check that the sending domain has valid MX records as a basic legitimacy test, so missing MX hurts deliverability too.

Every MailShrine domain includes WHOIS privacy, transfer lock, Anycast DNS with DNSSEC and two business mailboxes.