Email security & deliverability · grade A
v=spf1 ip4:12.160.199.0/24 ip4:8.20.170.0/24 ip4:216.45.139.0/24 ip4:8.40.136.224 ip4:66.179.74.12 include:mailgun.org include:spf.protection.outlook.com include:us._netblocks.mimecast.com -all