Email security & deliverability · grade A
v=spf1 ip4:199.94.19.0/24 ip4:199.94.20.0/24 ip4:128.103.0.0/16 ip4:198.245.85.88 ip4:3.236.169.128/27 ip4:3.236.67.96/27 include:spf.protection.outlook.com include:spf2.hbs.edu ~all