Безопасность и доставляемость почты · grade A
v=spf1 ip4:208.80.200.0/21 ip4:209.63.136.198 ip4:216.190.237.198 ip4:216.190.237.212 include:sendgrid.net include:spf.mandrillapp.com include:spf.mailjet.com include:docebosaas.com include:spf.protection.outlook.com include:_spf.salesforce.com include:amazonses.com ~all