FORTINET-NSE56 Nse6 Fortimail Secure Email Gateway Practice Question
An administrator wants to prevent email spoofing by verifying the sender's domain. Which policy should be configured to check the DNS TXT record of the sending domain?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SPF validation
SPF (Sender Policy Framework) is used to verify that the sending IP is authorized by checking the sender domain's DNS TXT records.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
SPF validation
Why this is correct
SPF checks the DNS TXT record for authorized sending IPs.
- ✗
DKIM verification
Why it's wrong here
DKIM verifies the signature, not the sender IP authorization.
- ✗
DMARC policy
Why it's wrong here
DMARC uses SPF/DKIM results but is an alignment policy, not the direct TXT check.
- ✗
Sender Reputation
Why it's wrong here
Sender reputation uses historical data, not DNS TXT records.
Visual reference
About these practice questions
One of 301 original FORTINET-NSE56 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Fortinet exam blueprint
This FORTINET-NSE56 practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FORTINET-NSE56 exam.