Email Formats
{
"mx": [
"10 usb-smtp-inbound-1.mimecast.com.",
"10 usb-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 ip4:66.76.162.91 ip4:66.76.162.90 ip4:104.37.160.67 ip4:104.37.160.66 include:spf.protection.outlook.com include:usb._netblocks.mimecast.com -all"
]
}