http://www.myunix.idv.tw/mx/forum/viewtopic.php?t=260
#SPAM
strict_rfc821_envelopes = yes
smtpd_recipient_restrictions = permit_mynetworks,reject_unknown_sender_domain,reject_unknown_recipient_domain,reject_non_fqdn_sender,reject_non_fqdn_recipient,reject_unauth_destination
smtpd_client_restrictions = reject_rbl_client relays.ordb.org,reject_rbl_client xxx.xxx.xxx
smtpd_sender_restrictions = reject_rbl_client relays.ordb.org,reject_rbl_client xxx.xxx.xxx
POSTFIX 擋廣告信
SpamCop
http://gslin.org/2005/02/17/577/
smtpd_client_restrictions = reject_rbl_client bl.spamcop.net, reject_rbl_client relays.ordb.org, reject_rbl_client xbl.spamhaus.org
smtpd_client_restrictions = reject_rbl_client bl.spamcop.net, reject_rbl_client relays.ordb.org, reject_rbl_client xbl.spamhaus.org