Email Formats

{
  "mx": [
    "10 mx-biz.mail.am0.yahoodns.net."
  ],
  "spf": [
    "v=spf1 a mx ip4:160.153.0.50 include:relay.mailchannels.net -all",
    "v=spf1 include:45261626.spf06.hubspotemail.net -all",
    "v=spf1 ptr:yahoo.com ptr:yahoo.net ?all"
  ]
}