MailFromDomainStatus   
    The status of the MAIL FROM domain. This status can have the following values:
- PENDING– Amazon SES hasn't started searching for the MX record yet.
- SUCCESS– Amazon SES detected the required MX record for the MAIL FROM domain.
- FAILED– Amazon SES can't find the required MX record, or the record no longer exists.
- TEMPORARY_FAILURE– A temporary issue occurred, which prevented Amazon SES from determining the status of the MAIL FROM domain.