3 # Mail relay access control list. Default is to reject mail unless the
4 # destination is local, or listed in /etc/mail/local-host-names
6 cyberspammer.com 550 We don't accept mail from spammers
7 FREE.STEALTH.MAILER@ 550 We don't accept mail from spammers
8 another.source.of.spam REJECT
9 okay.cyberspammer.com OK