Email Formats
{
"mx": [
"10 d97035a.ess.barracudanetworks.com.",
"20 d97035b.ess.barracudanetworks.com."
],
"spf": [
"v=spf1 a mx ip4:104.154.52.255 ip4:23.253.183.225 ip4:98.158.162.98 include:_spf.salesforce.com include:servers.mcsv.net include:mailgun.org include:sendgrid.net include:spf.protection.outlook.com -all"
]
}