Email Formats

{
  "mx": [
    "10 mailext01.knappschaft-kliniken.de.",
    "20 mailext02.knappschaft-kliniken.de."
  ],
  "spf": [
    "v=spf1 mx ip4:212.23.143.115 ip4:212.23.143.116 ip4:212.23.143.117 -all"
  ]
}