MX lookup
Enter a domain to see which servers receive its mail, in which order senders try them and whether each one can be reached.
What MX records do
MX records name the servers that accept mail for a domain. Senders try the lowest priority number first and fall back to the others when it does not answer.
Each MX record must point to a host name with an address, never to an IP address or a CNAME. A domain that should receive no mail at all can say so with a null MX record.