Email security & deliverability · grade A
v=spf1 mx a ip4:104.160.64.0/23 ip4:104.160.67.63/32 ip4:104.160.67.128/25 ip4:104.160.68.224/27 ip4:104.160.69.0/27 ip4:104.160.66.254 ip4:178.16.117.0/24 include:spf.protection.outlook.com include:_spf.psm.knowbe4.com -all