Безопасность и доставляемость почты · grade A
v=spf1 ip4:61.30.233.0/24 ip4:34.81.20.193 ip4:104.199.166.174 include:_spf.google.com include:cust-spf.exacttarget.com include:_spf.salesforce.com include:sendgrid.net include:_spf01.cw.com.tw include:_spf02.cw.com.tw ~all