N10-009 · Question #249
A company is moving to a hybrid cloud model. As part of this move the mail server will be moved to the cloud. The systems administrator needs to ensure the mail server continues to receive email…
The correct answer is C. MX. To ensure continuous email reception after moving a mail server to the cloud, the systems administrator must update the Mail Exchanger (MX) DNS record.
Question
A company is moving to a hybrid cloud model. As part of this move the mail server will be moved to the cloud. The systems administrator needs to ensure the mail server continues to receive email. Which of the following types of DNS records should the systems administrator update?
Options
- ANS
- BPTR
- CMX
- DA
How the community answered
(33 responses)- A6% (2)
- B3% (1)
- C88% (29)
- D3% (1)
Why each option
To ensure continuous email reception after moving a mail server to the cloud, the systems administrator must update the Mail Exchanger (MX) DNS record.
An NS (Name Server) record indicates the authoritative DNS servers for a domain, which should remain the same unless the entire DNS hosting changes, not just a mail server location.
A PTR (Pointer) record is used for reverse DNS lookups, mapping an IP address back to a domain name, and is not directly involved in directing incoming email.
The MX (Mail Exchanger) DNS record specifies the mail server responsible for accepting email messages on behalf of a domain name and its preference value. Updating this record to point to the new cloud-hosted mail server's address is crucial for ensuring that all incoming email messages are correctly routed and delivered.
An A (Address) record maps a domain name to an IPv4 address; while the mail server itself might have a new A record, updating the MX record is specifically what directs email traffic for the domain.
Concept tested: DNS MX record purpose
Source: https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/dns-record-types
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