Email security & deliverability · grade A
v=spf1 mx a include:spf.protection.outlook.com include:mailgun.org include:cust-spf.exacttarget.com include:spf.mandrillapp.com ip4:50.59.224.30 ip4:50.59.224.100 ip4:173.239.64.102 ip4:198.37.147.129 -all