TrendAI™ Email
Security allows you to specify an IP address
or a range of addresses within a sender domain identified by the message
header address to allow email messages only from those addresses. Sender IP Match is a
way that readily enables you to simultaneously allow all inbound email traffic from
a particular
domain while equally preventing spoofing by manually defining the allowed IP ranges.
If an email message passes the Sender IP Match check, TrendAI™ Email
Security skips its own SPF check as well as the SPF check of
DMARC authentication for this message.