Refer to the exhibit, which shows a command prompt output of a telnet command. Which configuration change must you make to prevent the banner from displaying the FortiMail serial number?

Question

Exhibit

Options

• AChange the host name
• BAdd a protected domain
• CConfigure a local domain name
• DChange the operation mode

• A
  96% (22)
• C
  4% (1)

Explanation

Changing the hostname replaces the default device identifier in the FortiMail connection banner. When no custom hostname is set, FortiMail falls back to using its serial number as the identifier shown in the telnet/SSH greeting - setting a hostname overrides this with a human-defined string instead.

Why the distractors are wrong:

• B (Protected domain): This configures domains FortiMail will accept mail for - it has no effect on the connection banner.
• C (Local domain name): This affects DNS resolution and SMTP HELO/EHLO behavior, not the telnet login banner.
• D (Operation mode): Switching between Gateway, Transparent, or Server mode changes how mail is processed, not what the banner displays.

Memory tip: Think of it as a name tag - if you never give the device a name, it introduces itself by its serial number (the only unique ID it has by default). Set a hostname and it uses that instead.

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