Безопасность и доставляемость почты · grade A
v=spf1 a mx include:spf.mtasv.net include:spf.braintreegateway.com include:mail.zendesk.com ip4:207.126.144.0/20 ip4:64.18.0.0/20 ip4:74.125.148.0/22 include:_spf.google.com include:3391700.spf04.hubspotemail.net -all