Email Formats

{
  "mx": [
    "12801 ax.virusfree.cz.",
    "12817 bx.virusfree.cz.",
    "12833 cx.spamfree.cz.",
    "12849 dx.spamfree.cz."
  ],
  "spf": [
    "v=spf1 redirect=spfhard.virusfree.cz"
  ]
}