FORTINET-NSE56 Nse6 Fortimail Secure Email Gateway Practice Question
When configuring DMARC on FortiMail, which THREE components are required to successfully implement a 'reject' policy?
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
✓
A valid DKIM public key in DNS.
DMARC relies on SPF and DKIM for alignment, and the DMARC record in DNS dictates the policy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A valid DKIM public key in DNS.
Why this is correct
DKIM is a prerequisite for DMARC alignment.
- ✗
A custom antispam filter for all emails.
Why it's wrong here
Antispam filters are separate from DMARC enforcement.
- ✗
An LDAP server for user authentication.
Why it's wrong here
LDAP is for user management, not DMARC validation.
- ✓
A valid SPF record in DNS.
Why this is correct
SPF is a prerequisite for DMARC alignment.
- ✓
A DMARC TXT record in the domain's DNS.
Why this is correct
The DNS record defines the policy (p=reject).
About these practice questions
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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.