Email Formats

{
  "mx": [
    "20 ax.virusfree.cz.",
    "30 bx.virusfree.cz.",
    "40 cx.spamfree.cz.",
    "50 dx.spamfree.cz."
  ],
  "spf": [
    "v=spf1 redirect=spfsoft.virusfree.cz"
  ]
}