Email Formats

{
  "mx": [
    "10 smtp.smsystems.com."
  ],
  "spf": [
    "v=spf1 include:_spf.createsend.com mx a ip4:65.49.52.202/32 ip4:64.71.189.140/32 ip4:167.160.161.0/24 ~all"
  ]
}