Network Security Policy Framework check

Sender Policy Framework Check

MX Email reception

mx01.mail.icloud.com

mx02.mail.icloud.com

Sender Policy Framework

SPF (Sender Policy Framework) is an email authentication method designed to detect forging sender addresses during the delivery of the email. With SPF, there is an exhaustive list defined of the server IP addresses that are allowed to send emails for @domain.com addresses.

v=spf1 ip4:17.36.0.0/16 ip4:17.41.0.0/16 ip4:17.58.0.0/16 ip4:17.110.0.0/15 ip4:17.111.110.0/23 ip4:17.120.0.0/16 ip4:17.133.0.0/16 ip4:17.139.0.0/16 ip4:17.142.0.0/15 ip4:17.151.1.0/24 ip4:17.158.0.0/15 ip4:17.162.0.0/15 ip4:17.164.0.0/16 ip4:17.171.37.0/24 ip4:17.172.0.0/16 ip4:17.179.168.0/23 ip4:144.178.36.0/24 ip4:144.178.38.0/24 ~all

SPF Version: v=spf1

Sender IPv4 can be

17.36.0.0/16

17.41.0.0/16

17.58.0.0/16

17.110.0.0/15

17.111.110.0/23

17.120.0.0/16

17.133.0.0/16

17.139.0.0/16

17.142.0.0/15

17.151.1.0/24