Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

You are building a send-only mail relay on a Debian server. After installing the Postfix package, you must configure it so that all outbound messages are relayed through the company's authenticated SMTP gateway at smtp.corp.example.com on TCP port 587. Postfix must connect directly to that host and must not perform an MX lookup for it. Which single line correctly implements this requirement when added to /etc/postfix/main.cf?

  • relayhost = smtp.corp.example.com:587

  • fallback_relay = [smtp.corp.example.com]:587

  • smarthost = smtp.corp.example.com:587

  • relayhost = [smtp.corp.example.com]:587

CompTIA Linux+ XK0-006 (V8)
Services and User Management
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