Email Formats

{
  "mx": [
    "10 mail1n.kb.cz.",
    "10 mail2v.kb.cz."
  ],
  "spf": [
    "v=spf1 mx ip4:194.228.113.0/24 ip4:195.47.102.0/24 ip4:194.50.202.0/24 ip4:194.50.219.0/24 ip4:194.50.226.0/23 -all"
  ]
}