Email Formats

{
  "mx": [
    "10 mx2.sinosig.com.",
    "30 mx4.sinosig.com.",
    "10 mx1.sinosig.com.",
    "20 mx3.sinosig.com."
  ],
  "spf": [
    "v=spf1 include:spf.corp-email.com include:spfb.corp-email.com include:spf.sinosig.com -all"
  ]
}