Email Formats

{
  "mx": [
    "5 mailfilter-in-02.viettel.com.vn."
  ],
  "spf": [
    "v=spf1 a:mailfilter-out-01.viettel.com.vn ip4:125.235.240.32/27 ip4:171.252.201.182/32 mx a ip4:203.190.168.16/29 a:mailfilter-in-02.viettel.com.vn -all"
  ]
}