Which of the following steps must be performed when configuring the C-Seriesto handle incoming mail for a new mail domain? The installation involves a one armed configuration with a single listener…

Question

Options

• AAdd the new mail server to the RELAYLIST of the OutgoingMail Listener
• BConfigure an SMTP route to the new mail server.
• CAdd the new mail server to the RELAYLIST of the IncomingMail Listener
• DAdd the new mail domain to the HAT
• EAdd the new mail domain to the RAT

• A
  6% (2)
• B
  77% (24)
• C
  13% (4)
• D
  3% (1)

Explanation

When the C-Series receives mail for a new domain, it must first accept that mail and then know where to deliver it. Adding the domain to the RAT (Recipient Access Table) (option E) tells the single listener to accept incoming mail addressed to that domain - without this, the appliance rejects the messages outright. Configuring an SMTP route (option B) then tells the appliance how to forward accepted mail to the separate internal mail server in that domain.

Why the distractors are wrong:

• A & C (RELAYLIST): The RELAYLIST controls which hosts are permitted to relay outbound mail through the appliance - it has nothing to do with accepting mail for a new domain or routing it to an internal server.
• D (HAT): The Host Access Table governs which sending hosts (IP addresses/ranges) are allowed to connect and submit mail; it doesn't define which recipient domains the appliance accepts mail for.

Memory tip: Use the phrase "RAT accepts, Route delivers" - the RAT determines whether the appliance will accept mail for a domain, and the SMTP Route determines where it gets delivered afterward. These two steps always go together when onboarding a new domain with a downstream mail server.

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