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#vi /usr/local/etc/postfix/main.conf

#Main Configure
myhostname = ntut.idv.tw
mydomain = ntut.idv.tw
mynetworks = 88.88.88.88/26, 127.0.0.0/8
alias_maps = hash:/usr/local/etc/postfix/aliases
mail_spool_directory = /var/mail

# Other configuertion
disable_vrfy_command = yes
mailbox_size_limit = 204800000
smtpd_recipient_limit =300
message_size_limit = 30720000

# ClamAV
content_filter = smtp-amavis:[127.0.0.1]:10024

#vi /usr/local/etc/postfix/master.conf
smtp-amavis unix - - n - 2 smtp
-o smtp_data_done_timeout=1200
-o disable_dns_lookups=yes
127.0.0.1:10025 inet n - n - - smtpd
-o content_filter=
-o local_recipient_maps=
-o relay_recipient_maps=
-o smtpd_restriction_classes=
-o smtpd_client_restrictions=
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o mynetworks=127.0.0.0/8
-o strict_rfc821_envelopes=yes

#vi /usr/local/etc/postfix/aliases

virusalert: root
spamalert: root

#vi /usr/local/etc/rc.d/postfix.sh

case "$1" in
start)
/usr/local/sbin/postfix start > /dev/null 2>&1
echo -n ' Postfix'
;;
stop)
/usr/local/sbin/postfix stop > /dev/null 2>&1
echo -n ' Postfix stoped'
;;
reload)
/usr/local/sbin/postfix reload > /dev/null 2>&1
echo -n ' Postfix reloaded'
;;
-h)
echo "Usage: `basename $0` { start | stop | reload }"
;;
*)
/usr/local/sbin/postfix $1 > /dev/null 2>&1
echo -n ' Postfix $1'
;;
esac

D_PASS：不做任何處理，直接傳送給收件者。
D_DISCARD：信件不會傳送給寄件者及收件者。
D_BOUNCE：不傳送給收件者，除了定義在 $viruses_that_fake_sender_re 病毒名稱外的信件，amavisd-new 皆會傳送 DSN 訊息給寄件者。
D_REJECT：不傳送給收件者，寄件者會收拒絕傳送的訊息。
$sa_auto_whitelist = 1; # 啟用自動學習白名單 White List
sa_mail_body_size_limit = 200*1024; # 超過某個特定大小的郵件就不經過 SpamAssassin 的掃瞄。
sa_tag_level_deflt = 4.0; # 超過這個分數標準者，才視為垃圾郵件打分數。
$sa_tag2_level_deflt = 6.3; #超過這個分數標準者，才允許在郵件標頭加入 Spam 資訊。
sa_kill_level_deflt = 10 ; # 超過這個標準者，就直接將信件備份後刪除。

vi /usr/local/etc/amavisd.conf

$MYHOME = '/var/amavis';
$mydomain = 'ntut.idv.tw';
$daemon_user = 'vscan';
$daemon_group = 'vscan';

$log_level = 0;

$DO_SYSLOG = 0; # 由 1 改 0

$sa_spam_subject_tag = '***SPAM*** ';
$sa_spam_modifies_subj = 1;

$virus_admin = "virusalert\@$mydomain";
$spam_admin = "spamalert\@$mydomain";
$mailfrom_notify_admin = "virusalert\@$mydomain";
$mailfrom_notify_recip = "virusalert\@$mydomain";
$mailfrom_notify_spamadmin = "spamalert\@$mydomain";

$inet_socket_bind = '127.0.0.1';
$forward_method = 'smtp:127.0.0.1:10025';

$notify_method = $forward_method;
$inet_socket_port = 10024;
$max_servers = 2;

$final_virus_destiny = D_BOUNCE; # (defaults to D_DISCARD)
$final_banned_destiny = D_BOUNCE; # (defaults to D_BOUNCE)
$final_spam_destiny = D_BOUNCE; # (defaults to D_BOUNCE)
$final_bad_header_destiny = D_PASS; # (defaults to D_PASS)

['Clam Antivirus-clamd',

\&ask_daemon, ["CONTSCAN {}\n", '/tmp/clamd'],
qr/\bOK$/, qr/\bFOUND$/,
　　
qr/^.*?: (?!InfectedArchive)(.*) FOUND$/ ],

#vi /usr/local/etc/mail/spamassassin/local.cf

# SpamAssassin config file for version 2.5x
# generated by http://www.yrex.com/spam/spamconfig.php (version 1.01)

# How many hits before a message is considered spam. 得分多少以上就會被判定為垃圾郵件.
required_hits 10

# Whether to change the subject of suspected spam. 在垃圾郵件上之標題上加上註記.
rewrite_header Subject ****SPAM(_SCORE_)****

# Encapsulate spam in an attachment.
# 要如何處理垃圾郵件。因為郵件還會經過防毒程式的處理，所以必須設定為 0。
# 0：將資訊寫入郵件表頭。
# 1：將垃圾郵件轉為附件。
# 2：將垃圾郵件轉為純文字附件。
report_safe 0

# Use terse version of the spam report. 用精簡的方式來回報垃圾給管理者
use_terse_report 0

# Enable the Bayes system. 使用貝氏學習系統
use_bayes 1

# Enable Bayes auto-learning. 開起貝氏自動學習功能
auto_learn 1

# Enable or Disable network checks. 略過 RBLs 之檢查、使用 Razor version 2、使用 DCC (Distributed Checksum Clearinghouse)、使用 Pyzor
skip_rbl_checks 0
use_razor2 1
use_dcc 1
use_pyzor 1

# Blacklist. 黑色清單，判定減 - 100 分
blacklist_from *@sohu.com *@mailfb.com

# Whitelist . 白色清單，判定加 +100 分
whitelist_from *@yahoo.com.tw *@yahoo.com.hk *@yahoogroups.com.hk
whitelist_from rika@rika.idv.tw

# Mail using languages used in these country codes will not be marked
# as being possibly spam in a foreign language.
# - chinese
ok_languages zh en

# Mail using locales used in these country codes will not be marked
# as being possibly spam in a foreign language.
ok_locales zh en

# Disabled scores. 防止中文主旨和中文收件者誤判，建議再加上下列幾行
score HEADER_8BITS 0
score HTML_COMMENT_8BITS 0
score SUBJ_FULL_OF_8BITS 0
score UPPERCASE_25_50 0
score UPPERCASE_50_75 0
score UPPERCASE_75_100 0

# local domain from but ip not match. 網域和 ip 不符，疑為垃圾信件
header __FROM_TEATIME Received =~ /from ntut.idv.tw/i
header __FROM_TEATIME_IP Received =~ /\[88\.88\.88\.88\]/
meta FROM_TEATIME_BUT_IP_ERROR (__FROM_TEATIME)
describe FROM_TEATIME_BUT_IP_ERROR From ntut.idv.tw but ip not match
score FROM_TEATIME_BUT_IP_ERROR 8

#vi /usr/local/etc/clamd.conf

LogFile /var/log/clamav/clamd.log
LogFileMaxSize 2M
LogTime
LogSyslog
LogVerbose
PidFile /var/run/clamav/clamd.pid
LocalSocket /var/run/clamav/clamd
StreamSaveToDisk
MaxDirectoryRecursion 20
User clamav
AllowSupplementaryGroups
ScanMail
ScanArchive
ScanRAR
ArchiveMaxFileSize 15M
ArchiveMaxRecursion 8
ArchiveMaxFiles 1500
ClamukoScanOnOpen
ClamukoScanOnClose
ClamukoScanOnExec
ClamukoIncludePath /home
ClamukoMaxFileSize 1M