Go back to 050-SEPROSIEM-01 - RSA Certified SE Professional in Security Information and Event Management

Question :-

Which two (2) steps can you take to prevent your mail service in Mac OS X Server v10.4 from being used as an open relay? (Choose TWO.)
Require SMTP authentication.
Require APOP authentication.
Configure the firewall to block port 110.
Configure the firewall to block port 323.
Limit the hosts and networks from which you accept relays.

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