A network administrator is configuring a DNS server to ensure proper routing of email traffic to the company's mail server. Which DNS record type should they configure to achieve this?
CNAME
A
MX
TXT
The correct answer is MX (Mail Exchange). MX records specify which mail servers are responsible for receiving email for a domain and include a preference value that determines the order in which servers are tried. This ensures that inbound email is routed to the correct host and that a backup server can be used if the primary is unavailable.
A records map a hostname to an IPv4 address and do not carry any information about mail delivery. CNAME records create an alias that points one hostname to another, while TXT records store arbitrary text (for example, SPF or DKIM data); neither of these record types directs how email should be delivered.
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