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CompTIA CAS-005 Exam - Topic 3 Question 27 Discussion

Emails that the marketing department is sending to customers are going to the customers' spam folders. The security team is investigating the issue and discovers that the certificates used by the email server were reissued, but DNS records had not been updated. Which of the following should the security team update in order to fix this issue? (Select three).
A) DMARC and B) SPF and C) DKIM
D) DNSSEC
E) SASE
F) SAN
G) SOA
H) MX

CompTIA CAS-005 Exam - Topic 3 Question 27 Discussion

Actual exam question for CompTIA's CAS-005 exam
Question #: 27
Topic #: 3
[All CAS-005 Questions]

Emails that the marketing department is sending to customers are going to the customers' spam folders. The security team is investigating the issue and discovers that the certificates used by the email server were reissued, but DNS records had not been updated. Which of the following should the security team update in order to fix this issue? (Select three).

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Suggested Answer: A, B, C

by Heike at May 07, 2026, 08:43 PM

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Corinne
1 month ago
I'm a bit confused about DNSSEC and how it relates to this issue. Is it really necessary to update that?
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Cyndy
1 month ago
I remember practicing a question about email authentication, and SPF was definitely one of the key components.
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Joesph
1 month ago
I think we need to look at SPF and DKIM for sure, but I'm not entirely sure about DMARC. It seems important too.
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