Email Formats

{
  "mx": [
    "10 citybrook-com.mx1.arsmtp.com.",
    "20 citybrook-com.mx2.arsmtp.com."
  ],
  "spf": [
    "v=spf1 include:_spf.google.com include:citybrook-com.spf.smtp25.com -all"
  ]
}