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CISSP · Question #83
CISSP Question #83: Real Exam Question with Answer & Explanation
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Submitted by hassan_iq· Mar 5, 2026Communication and Network Security
Question
Checking routing information on e-mail to determine it is in a valid format and contains valid information is an example of which of the following anti-spam approaches?
Options
- ASimple Mail Transfer Protocol (SMTP) blacklist
- BReverse Domain Name System (DNS) lookup
- CHashing algorithm
- DHeader analysis
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Topics
#anti-spam#email security#header analysis#network security