Email Formats
{
"mx": [
"10 smtp1.mx.wustl.edu.",
"10 smtp2.mx.wustl.edu.",
"100 ms43096679.msv1.invalid.wustl.edu.",
"10 smtp4.mx.wustl.edu.",
"10 smtp3.mx.wustl.edu."
],
"spf": [
"v=spf1 ip4:208.117.61.155 ip4:104.45.175.206 ip4:52.224.142.128 ip4:52.180.90.234 ip4:13.78.229.208 ip4:13.78.238.122 include:spf.protection.outlook.com exists:%{i}._spf.mta.salesforce.com include:spf1.wustl.edu ~all"
]
}