Email Formats

{
  "mx": [
    "30 mx-biz.mail.am0.yahoodns.net.",
    "20 mx-biz.mail.am0.yahoodns.net."
  ],
  "spf": [
    "v=spf1 a mx ip4:69.43.201.1/16 ip4:198.199.117.111  ip4:162.243.35.235  ip4:162.243.7.119  ip4:104.236.65.212 ip4:45.55.237.194 include:protection.my220.com ~all",
    "v=spf1 ptr:yahoo.com ptr:yahoo.net ?all"
  ]
}