Email Formats

{
  "mx": [
    "10 markdunning-com.mx1.arsmtp.com.",
    "20 markdunning-com.mx2.arsmtp.com.",
    "99 markdunning-com.mail.protection.outlook.com."
  ],
  "spf": [
    "v=spf1  include:spf.protection.outlook.com include:spf.smtp2go.com include:_spf.smtp.com -all"
  ]
}