Email Formats
{
"mx": [
"10 us-smtp-inbound-1.mimecast.com.",
"10 us-smtp-inbound-2.mimecast.com."
],
"spf": [
"v=spf1 mx a ip4:208.75.123.3 ip4:216.157.77.69 ip4:72.43.54.154 ip4:205.145.130.165 ip4:207.75.127.254 ip4:216.234.123.86 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:amazonses.com -all"
]
}