MxLookup Performs a DNS lookup on a domain to find the mail exchanger (MX) records. This can be used as part of an email system, or to validate email domains. E.g. if a user enters someone@hotmail.com, use the component to get the MX record for hotmail.com. If no MX records are returned, it's not a valid e-mail address. Enter a domain name (e.g. hotmail.com) and a name server (or use the default) to find the MX records for the domain: Name server: Domain:

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