Domain-based authentication

TrendAI™ Email Security provides authentication methods such as Sender IP Match, Sender Policy Framework (SPF), DomainKeys Identified Mail (DKIM) verification, and Domain-based Message Authentication, Reporting & Conformance (DMARC) to protect against email spoofing.

If all these methods are enabled, TrendAI™ Email Security evaluates email messages in the following order:

TrendAI™ Email Security keeps evaluating and scanning an email message in the preceding order until encountering an Intercept action. 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.