N10-009 Exam Dumps | An ongoing mail server migration is in progress. The current system does not use encrypted mail protocols,

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Question 305/374

An ongoing mail server migration is in progress. The current system does not use encrypted mail protocols, but the new system does. Which of the following ports can the administrator close to deny non-encrypted protocols without interrupting the migration?

A. 22

B. 23

C. 25

D. 443

E. 587

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