Безопасность и доставляемость почты · grade A
v=spf1 mx ip4:34.102.174.170 ip4:103.117.159.0/24 ip4:103.103.198.0/24 include:_spf.google.com include:sendgrid.net include:mktomail.com include:zcsend.net include:spf.zoho.in include:_spf.salesforce.com ~all