Email Formats

{
  "mx": [
    "10 tchkmx01.sf-express.com.",
    "20 hwgzmx01.sf-express.com.",
    "20 tcgzmx01.sf-express.com."
  ],
  "spf": [
    "v=spf1 include:spf.sf-express.com include:servicemail.sf-express.com include:spf-relay.sf-express.com include:spf-pmg.sf-express.com -all"
  ]
}