Email Formats

{
  "mx": [
    "10 ax.virusfree.cz.",
    "20 bx.virusfree.cz.",
    "30 cx.spamfree.cz.",
    "40 dx.spamfree.cz."
  ],
  "spf": [
    "v=spf1 ip4:62.77.78.24 -all"
  ]
}