FORTINET-NSE56 Nse6 Fortimail Secure Email Gateway Practice Question
In Gateway mode, what is the default behavior when FortiMail receives an email for an unknown recipient?
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
✓
Reject the email at the SMTP level.
By default, FortiMail acts as a relay. If it doesn't recognize the recipient, it may reject the connection or try to relay it based on relay policies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Accept the email and store it in a general box.
Why it's wrong here
FortiMail does not have a 'catch-all' box by default.
- ✗
Forward the email to the administrator.
Why it's wrong here
This would be a security risk and is not default.
- ✗
Queue the email for 24 hours.
Why it's wrong here
Queuing doesn't solve the unknown recipient issue.
- ✓
Reject the email at the SMTP level.
Why this is correct
FortiMail typically rejects unknown recipients during the SMTP conversation to prevent backscatter.
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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.