Fortinet NSE6_FML-6.4 Actual Free Exam Questions & Community Discussion

  • Exam Code/Number: NSE6_FML-6.4
  • Exam Name/Title: Fortinet NSE 6 - FortiMail 6.4
  • Certification Provider: Fortinet
  • Corresponding Certification: NSE 6 Network Security Specialist
  • Exam Questions: 57
  • Updated On: Jun 18, 2026
A FortiMail administrator is investigating a sudden increase in DSNs being delivered to the protected domain for undeliverable email messages. After searching the logs, the administrator identifies that the DSNs were not generated as a result of any outbound email sent from the protected domain.
Which FortiMail antispam technique can the administrator use to prevent this scenario?
Correct Answer: D Vote an answer
Examine the FortiMail topology and access receive rule shown in the exhibit; then answer the question below.


An administrator must enforce authentication on FML-1 for all outbound email from the example.com domain. Which of the following settings should be used to configure the access receive rule? (Choose two.)
Correct Answer: B,D Vote an answer
Refer to the exhibit.

Which statement describes the impact of setting the User inactivity expiry time option to 90 days?
Correct Answer: B Vote an answer
Which of the following antispam techniques queries FortiGuard for rating information? (Choose two.)
Correct Answer: A,D Vote an answer
An administrator sees that an excessive amount of storage space on a FortiMail device is being used up by quarantine accounts for invalid users. The FortiMail is operating in transparent mode.
Which two FortiMail features can the administrator configure to tackle this issue? (Choose two.)
Correct Answer: A,C Vote an answer
Refer to the exhibit.

The exhibit shows a FortiMail active-passive setup.
Which three actions are recommended when configuring the primary FortiMail HA interface? (Choose three.)
Correct Answer: B,D,E Vote an answer
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