Email Formats

{
"mx": [
"10 usb-smtp-inbound-2.mimecast.com.",
"10 usb-smtp-inbound-1.mimecast.com."
],
"spf": [
"v=spf1 include:_spf.aetna.com include:_spf2.aetna.com ip4:208.86.168.7 ip4:174.128.1.123 include:_spf.cofinity.net include:_spf.salesforce.com -all"
]
}