Type: Collection of MxRec
This is a 1-based collection of MX records returned from a
successful DNS-level validation. In two cases, the MxRec
object data will be synthesized instead of containing true MX record
- There are no MX records for a domain, the domain has an A
record, and hexVeOptionRequireMx is not part of Options.
- The email address contains a domain literal instead of a domain
and hexVeOptionDisallowDomainLiterals is not in Options.