Email security & deliverability · grade A
v=spf1 ip4:128.173.0.0/16 ip4:198.82.0.0/16 ip6:2001:468:c80::/48 ip6:2607:b400::/40 mx include:spf.protection.outlook.com include:_spf.google.com include:spf.mail.vt.edu ~all