Email Formats

{
  "mx": [
    "50 mx21-1a.gakushuin.ac.jp.",
    "50 mx21-2a.gakushuin.ac.jp."
  ],
  "spf": [
    "v=spf1 mx a:mta18.gakushuin.ac.jp a:comet.cc.gakushuin.ac.jp a:moodle.univ.gakushuin.ac.jp a:mta24.gakushuin.ac.jp +ip4:150.90.140.0/24 include:amazonses.com ~all"
  ]
}