To avoid spammers using your mail server to relay their messages, you need to .
A. Disable the relay control in /etc/aliases
B. Set up a ruleset for this in /etc/sendmail.cf
C. Set up relay control in your DNS's MX record.
D. Recompile sendmail with the NORELAY flag.
Answer:B
To avoid spammers using your mail server to relay their messages, you need to .
A. Disable the relay control in /etc/aliases B. Set up a ruleset for this in /etc/sendmail.cf C. Set up relay control in your DNS's MX record. D. Recompile sendmail with the NORELAY flag.