DomainToMXrecord DNS
From Paterva Wiki
DomainToMXrecord_DNS
This transform determines if an MX record exists for the given Domain. The MX record is the mail exchanger record and is returned as a MXrecord. The IPAddress of this record gives a good indication of the network location of the target as most organisations keep their mail close to their network. This is normally used in the infrastructure footprinting of an organisation.
Typical uses
Domain via transform DomainToMXrecord_DNS to
MXrecord via transform MXrecordToIPAddress_DNS to