you need to _______

To avoid spammers using your mail server to relay their messages, you need to _______.

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.



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