amavisd-new…postfix と clamav を連携させるためのラッパ
clamav…スパム、ウイルスチェックカーの本体
spamassassin…今回の導入は見送ります
# apt-get install amavisd-new
# apt-get install clamav
# apt-get install clamav-base
# apt-get install clamav-daemon
# apt-get install clamav-freshclam
# vi /etc/amavis/conf.d/05-node_id
$myhostname = “mail.example.com”
# vi /etc/amavis/conf.d/15-content_filter_mode
antivirus と SPAM のコメントアウトされ部分を有効にする
# vi /etc/amavis/conf.d/20-debian_defaults
$final_virus_destiny = D_DISCARD; # (data not lost, see virus quarantine)
$final_banned_destiny = D_BOUNCE; # D_REJECT when front-end MTA
$final_spam_destiny = D_PASS; # 元はD_BOUNCE
$final_bad_header_destiny = D_PASS; # False-positive prone (for spam)