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It has been discovered that the company mail server is configured as an open relay. Which of the following actions would help prevent the mail server from being used as an open relay while maintaining the possibility to receive company mails? (Choose two.)
Suggested Answer: C, D
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12 comments · newest first
JE
Jeannetta
11 months ago
Surprised that this is still a problem in 2023!
WI
William
12 months ago
B doesn't really address the open relay issue.
SH
Sherrell
12 months ago
Wait, isn't restricting port 25 a bit extreme?
TH
Thomasena
12 months ago
I think D is the better option here.
AN
Annelle
1 year ago
A is definitely a good move.
RO
Rory
1 year ago
I'm a bit confused about the Dovecot option. I don't see how configuring IMAP would really help with the open relay issue.
GA
Galen
1 year ago
I remember practicing a similar question where we had to secure a mail server. I feel like restricting outbound SMTP from the internal network could help too.
OR
Orville
1 year ago
I think restricting Postfix to only accept emails for domains hosted on the server might be a good choice, but I'm not entirely sure about the other options.
JA
Jacquelyne
1 year ago
I think blocking port 25 traffic on the public network could prevent unauthorized access, but it might also block legitimate emails. I'm not sure if that's the best approach.
TR
Tracey
1 year ago
I'm pretty confident about this one. The options related to user IP mappings, steering rules, and security group assignments seem like the most likely answers.
AL
Alyce
1 year ago
This looks like a straightforward question to me. The key requirements are secure login credentials and encrypted transport, so HTTPS is a clear choice. And since the question specifically mentions running CLI commands remotely on Cisco Nexus 9000 Series switches, NX-API seems like the logical second component. I'm confident those are the right two options to select.
TA
Tamala
1 year ago
The key here is understanding what "building components" refers to. I'm going to re-read the question and options.