Email Formats
{
"mx": [
"0 mx1-us.emailsecurity.app.",
"10 mx2-us.emailsecurity.app."
],
"spf": [
"v=spf1 mx include:spf.protection.outlook.com ip4:199.233.14.0/24 ip4:192.254.125.211/32 include:_spf.salesforce.com include:sendgrid.net ip4:167.89.67.235/32 include:cetera.com include:cust-spf.exacttarget.com -all"
]
}