Email Formats

{
  "mx": [
    "3 mail1.jmc.com.cn.",
    "2 mail.jmc.com.cn.",
    "1 smg.jmc.com.cn.",
    "5 mailgw118.jmc.com.cn.",
    "4 mailgw117.jmc.com.cn."
  ],
  "spf": [
    "v=spf1 a mx -all"
  ]
}