An MX record is a type of DNS record that specifies the mail exchange servers responsible for accepting email messages on behalf of a domain. Checking the MX record for a domain is important for ensuring that email is delivered correctly. There are several methods to check the MX record for a domain, including using a command-line tool like dig or nslookup, or using a web-based tool like MXToolbox.
The importance of checking the MX record for a domain cannot be overstated. If the MX record is incorrect or out-of-date, email messages may be delayed, lost, or even delivered to the wrong recipient. This can have a significant impact on businesses and individuals alike.