作者： 楊廷勇（scyzxp at toping.net）
來自： LinuxSir.Org
版權：楊廷勇 Copyright © 2004、2005、2006
摘要： 本文介紹使用 Linux + Postfix + Cyrus-sasl + Courier-imap + Tmail3.0 + spamassassin + Clamav + mailscanner ，來架構一個具有多域名，有郵件列表、webmail、防病毒、防垃圾郵件、web管理界面的郵件系統。
Jacky, $Revision: 4.51 bate $Date: 2006-3-9
系統主要采用 MailScanner + clamav + Spamassassin 來對病毒過濾和垃圾郵件過濾。
本文在CentOS、REDHATas上安裝測試通過，病毒過濾放棄采用amavisd。主要采用執行效率更高的MailSanner來對郵件過濾和垃圾郵件過濾，配置更容易，并且降低了系統開消。讓系統更加穩定，經過嚴格病毒郵件測試成功率達到了100%。垃圾郵件過濾基本上達到了95%的成功率。
更新日志
新增使用mailscanner來對進出郵件進行監管。new
修正上一個版本的一些理解性和文件性錯誤。
主要“加強”了病毒過濾和垃圾郵件過濾，更加節約系統資源，使系統配置更簡單化。
垃圾郵件過濾基本上達到了95%的成功率
本文首次使用MailScanner+Clamav配合對郵件病毒進行過濾。
經過嚴格病毒郵件測試成功率達到了100%。
翻譯了病毒郵件提示為中文提示，讓系統更加的人性化。
目錄
+++++++++++++++++++++++++++++++++++++++++++
正文
+++++++++++++++++++++++++++++++++++++++++++
0、演示地址：
http://mail.toping.net
用戶名：demo@toping.net
密 碼：demo
1.、安裝系統
安裝之前：因用戶數據都保存在/var目錄下，因此安裝系統時/var的空間應盡量大。系統的版本為最小化安裝，軟件包只安裝只裝開發包 (development)。在文檔中假設服務器的ip地址為192.168.0.2，域名為test.com，主機名為mail.test.com。所需的軟件包我都打包好了。
下載地址： http://www.toping.net/soft/src.tar.gz
請兄弟們仔細一些，注意空格和TAB。
祝兄弟們好運。本人水平有限。如果發現文章中有什么錯誤和不當的地方請發郵件：scyz at toping.net。我會在第一時間給予答復。
2.關閉selinux
[root@mail]# vi /etc/selinux/config
SELINUX=disable
[root@mail]# reboot
3、設置YUM
[root@mail yum.repos.d] vi CentOS-Base.repo
[base] name=CentOS-4.2 - Base baseurl=http://mirror.be10.com/centos/4.2/os/$basearch/ gpgcheck=1 gpgkey=http://mirror.be10.com/centos/RPM-GPG-KEY-centos4 #released updates [update] name=CentOS-4.2 - Updates baseurl=http://mirror.be10.com/centos/4.2/updates/$basearch/ gpgcheck=1 gpgkey=http://mirror.be10.com/centos/RPM-GPG-KEY-centos4 #packages used/produced in the build but not released [addons] name=CentOS-4.2 - Addons baseurl=http://mirror.be10.com/centos/4.2/addons/$basearch/ gpgcheck=1 gpgkey=http://mirror.be10.com/centos/RPM-GPG-KEY-centos4 #additional packages that may be useful [extras] name=CentOS-4.2 - Extras baseurl=http://mirror.be10.com/centos/4.2/extras/$basearch/ gpgcheck=1 gpgkey=http://mirror.be10.com/centos/RPM-GPG-KEY-centos4 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-4.2 - Plus baseurl=http://mirror.be10.com/centos/4.2/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirror.be10.com/centos/RPM-GPG-KEY-centos4 #contrib - packages by Centos Users [contrib] name=CentOS-4.2 - Contrib baseurl=http://mirror.be10.com/centos/4.2/contrib/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirror.be10.com/centos/RPM-GPG-KEY-centos4 #packages in testing [testing] name=CentOS-4.2 - Testing baseurl=http://mirror.be10.com/centos/4.2/testing/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirror.be10.com/centos/RPM-GPG-KEY-centos4 [root@mail yum.repos.d]# vi dag.repo [dag] name=Dag RPM Repository for Red Hat Enterprise Linux baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag gpgcheck=1 enabled=1
[root@mail yum.repos.d]# yum update
4、安裝mysql
[root@mail build]#yum install mysql-server
[root@mail build]#yum install mysql-devel
5、安裝apache
[root@mail build]#yum install httpd
6.安裝php
[root@mail build]#yum install php
[root@mail build]#yum install php-mysql
[root@mail build]#yum install php-gd
[root@mail build]#yum install php-imap
[root@mail build]#yum install vsftpd
[root@mail build]#yum install clamav
[root@mail build]#yum install spamassassin
[root@mail build]#/usr/bin/freshclam
設置apache
默認：
User apache
改為
User postfix
默認
Group apache
改為
Group postfix
默認
AddDefaultCharset UTF-8
改為
AddDefaultCharset gb2312
新加入：
AddType application/x-httpd-php .php
AddType application/x-httpd-php-source .phps
7、安裝phpMyAdmin
[root@mail build]#tar –zxf ../src/phpMyAdmin-2.8.0.1.tar.gz
[root@mail build]#mv phpMyAdmin-2.8.0.1 /var/www/html/dbadmin/
[root@mail build]#cp /var/www/html/dbadmin/libraries/config.default.php /var/www/html/dbadmin/dbadmin/libraries/config.inc.php (line 1.)
8、設置數據庫
[root@mail build]#mysql
Mysql> create datases postfix;
Mysql> use mysql;
Mysql> INSERT INTO user (host,user,password) VALUES('localhost','postfix','');
Mysql> update user set password=password('postfix') where User='postfix';
Mysql> GRANT ALL ON postfix.* TO postfix@localhost IDENTIFIED BY "postfix";
Mysql> exit
[root@mail build] tar –zxf ../src/webmail.tar.gz
[root@mail build] mysql –u root –p postfix < Tmail.sql
9、增加postfix的用戶和組
[root@mail build] groupadd -g 12345 postfix
[root@mail build] useradd -u 12345 -g 12345 -c postfix -d/dev/null -s/sbin/nologin postfix
[root@mail build] groupadd -g 54321 postdrop
10、安裝postfix
[root@mail build] tar –zxf ../src/postfix-2.2.8.tar.gz
[root@mail build] cd postfix-2.2.8
[root@mail build] patch -p1 < ../../src/postfix-2.2.8-vda.patch
[root@mail build] make -f Makefile.init makefiles \
'CCARGS=-DUSE_SASL_AUTH -DHAS_MYSQL -I/usr/include/mysql -I/usr/include/sasl' \
'AUXLIBS=-L/usr/lib/mysql -L/usr/lib/sasl2 -lmysqlclient -lsasl2 -lz -lm'
[root@mail build] make
[root@mail build] make install
執行make install這里會出現很多問題，但postfix已經為我們設置好了默認的答案，直接使用這些答案就可以使postfix正常工作了，所以我們只要直接按回車就可以了
11、安裝Courier-authlib
[root@mail build] tar –jxf ../src/courier-authlib-0.58.tar.gz
[root@mail build] cd courier-authlib-0.58
[root@mail build] ./configure --prefix=/usr/lib/authlib --without-authpam \
--without-authcustom --without-authpgsql --without-authldap \
--without-authuserdb --without-authpwd --without-authshadow \
--without-authvchkpw --with-authmysql \
--with-authdaemonvar=/usr/lib/authlib/var \
--mandir=/usr/lib/man --without-stdheaderdir \
--sysconfdir=/usr/lib/authlib/etc \
--with-redhat
[root@mail build] make
[root@mail build] make install
[root@mail build] make install-migrate
[root@mail build] make install-configure
12、設置authlib的環境變量
[root@mail build] COURIERAUTHCONFIG=/usr/lib/authlib/bin/courierauthconfig
[root@mail build] export COURIERAUTHCONFIG
13、安裝Courier-imap
[root@mail build] tar –jxf ../src/courier-imap-4.0.6.tar.gz
[root@mail build] cd courier-imap-4.0.6
[root@mail build] ./configure –prefix=/usr/lib/imapd \
--silent --without-authpgsql --without-ipv6 \
--with-redhat --with-authmysql \
--mandir=/usr/lib/man --disable-root-check
[root@mail build] make
[root@mail build] make install
[root@mail build] make install-configure
14、配置系統
[root@mail build] mv /etc/aliases /etc/aliases.bak
[root@mail build] ln -s /etc/postfix/aliases /etc/aliases
[root@mail build] echo 'root: postfix'>>/etc/postfix/aliases
[root@mail build] /usr/bin/newaliases
[root@mail build] mv /var/mail /var/mail.bak
[root@mail build] mkdir /var/mail
[root@mail build] chown -R postfix:postfix /var/mail
[root@mail build] mv /etc/postfix/main.cf /etc/postfix/main.cf.bak
[root@mail build] vi /etc/postfix/main.cf
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
html_directory = no
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
unknown_local_recipient_reject_code = 550
header_checks = regexp:/etc/postfix/header_checks
#############NEW ADD#####################
#=====================BASE=====================
myhostname = mail.test.com
mydomain = test.com
mydestination = $myhostname
local_recipient_maps =
local_transport = virtual
#=====================MySQL=====================
virtual_alias_maps = mysql:/etc/postfix/mysql/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:54321
virtual_mailbox_base = /
virtual_mailbox_domains = mysql:/etc/postfix/mysql/mysql_virtual_domains_maps.cf
virtual_mailbox_limit = 51200000
virtual_mailbox_maps = mysql:/etc/postfix/mysql/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 125
virtual_transport = virtual
virtual_uid_maps = static:12345
#=====================Quota=====================
virtual_create_maildirsize = yes
virtual_mailbox_extended = yes
virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_maildir_limit_message = Sorry, the user's maildir has overdrawn his diskspace quota, please try again later.
virtual_overquota_bounce = yes
#====================SASL=====================
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_delay_reject=yes
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,permit_auth_destination,reject
smtpd_client_restrictions = permit_sasl_authenticated
[root@mail build] vi mysql_virtual_alias_maps.cf
user = postfix
password = postfix
hosts = localhost
dbname = postfix
query = SELECT alias FROM userinfo WHERE address='%s' AND active = 1
[root@mail build] vi mysql_virtual_domains_maps.cf
user = postfix
password = postfix
hosts = localhost
dbname = postfix
query = SELECT domain FROM domaininfo WHERE domain='%s'
[root@mail build] vi mysql_virtual_mailbox_limit_maps.cf
user = postfix
password = postfix
hosts = localhost
dbname = postfix
query = SELECT quota FROM userinfo WHERE address='%s'
[root@mail build] vi mysql_virtual_mailbox_maps.cf
user = postfix
password = postfix
hosts = localhost
dbname = postfix
query = SELECT maildir FROM userinfo WHERE address='%s' AND active = 1
15、配置sasl認證
[root@mail build] vi /usr/lib/sasl2/smtpd.conf
pwcheck_method: authdaemond
log_level: 3
mech_list: plain login
authdaemond_path:/usr/lib/authlib/var/socket
16、配置courier-imap
[root@mail build] mv /usr/lib/authlib/etc/authlib/authmysqlrc /usr/lib/authlib/etc/authlib/authmysqlrc.bak
[root@mail build] vi /usr/lib/authlib/etc/authlib/authmysqlrc
MYSQL_SERVER localhost
MYSQL_USERNAME postfix
MYSQL_PASSWORD postfix
MYSQL_PORT 0
MYSQL_OPT 0
MYSQL_DATABASE postfix
MYSQL_USER_TABLE userinfo
MYSQL_CRYPT_PWFIELD passwd
MYSQL_UID_FIELD '12345'
MYSQL_GID_FIELD '54321'
MYSQL_LOGIN_FIELD address
MYSQL_HOME_FIELD homedir
MYSQL_NAME_FIELD realname
MYSQL_MAILDIR_FIELD maildir
MYSQL_QUOTA_FIELD quota
[root@mail build] mv /usr/lib/authlib/etc/authlib/authdaemonrc /usr/lib/authlib/etc/authlib/authdaemonrc.bak
[root@mail build] vi /usr/lib/authlib/etc/authlib/authdaemonrc
authmodulelist="authmysql"
authmodulelistorig="authmysql"
version="authdaemond.mysql"
daemons=5
subsystem=mail
DEBUG_LOGIN=0
DEFAULTOPTIONS="wbnodsn=1"
[root@mail build] vi /usr/lib/imapd/etc/pop3d
默認
POP3DSTART=NO
改為
POP3DSTART=YES
[root@mail build] vi /usr/lib/imapd/etc/imapd
默認
IMAPDSTART=NO
改為
IMAPDSTART=YES
[root@mail build] chmod +x /usr/lib/authlib/var/
17、安裝WebMail
[root@mail build] mv Tmail /var/www/html/webmail
[root@mail build] vi /var/www/html/webmail/config/config_inc.php
$CFG_BASEPATH = "/var/www/html/webmail/temp"; //臨時目錄
// Mysql
define(MYSQL_HOST, 'localhost'); //數據庫主機名
define(MYSQL_USER, 'postfix'); //數據庫用戶名
define(MYSQL_PASS, 'postfix'); //數據庫密碼
define(MYSQL_DATA, 'postfix'); //數據庫名稱
$CFG_NETDISK_PATH = "/var/mail/netdisk"; //文件管理存儲目錄
[root@mail build] vi /var/www/html/webmail/webadmin/include/config.inc.php
// Mysql
define(MYSQL_HOST, 'localhost'); //數據庫主機名
define(MYSQL_USER, 'postfix'); //數據庫用戶名
define(MYSQL_PASS, 'postfix'); //數據庫密碼
define(MYSQL_DATA, 'postfix'); //數據庫名稱
[root@mail build] mkdir /var/mail/netdisk
[root@mail build] chown –R postfix:postfix /var/mail/netdisk
[root@mail build] mkdir /var/www/html/webmail/temp
[root@mail build] chown –R postfix:postfix /var/www/html/webmail/temp
[root@mail build] cp courier-authlib-0.58/courier-authlib.sysvinit /etc/rc.d/init.d/courier-authlib
[root@mail build] chmod 755 /etc/rc.d/init.d/courier-authlib
[root@mail build] chkconfig –-add courier-authlib
[root@mail build] cp courier-imap-4.0.6/courier-imap.sysvinit /etc/rc.d/init.d/courier-imap
[root@mail build] chmod 755 /etc/rc.d/init.d/courier-imap
[root@mail build] chkconfig –-add courier-imap
18、啟動服務測試
[root@mail build] chkconfig httpd on
[root@mail build] chkconfig mysqld on
[root@mail build] service httpd start
[root@mail build] service mysqld start
[root@mail build] service courier-authlib start
[root@mail build] service courier-imap start
[root@mail build] postfix start
通過后臺加入域名和用戶名（本文檔中的域名為: test.com 、 用戶名： test@test.com ）
[root@mail build] perl -MMIME::Base64 -e 'print encode_base64("test\@test.com");'
dGVzdEB0ZXN0LmNvbQ==
[root@mail build] perl -MMIME::Base64 -e 'print encode_base64("000000");'
MDAwMDAw
[root@mail build] telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 mail.test.com ESMTP Postfix
ehlo mail
250-mail.test.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250 8BITMIME
auth login
334 VXNlcm5hbWU6
dGVzdEB0ZXN0LmNvbQ== //用戶名（test@test.com）
334 UGFzc3dvcmQ6
MDAwMDAw // 密碼（000000）
235 Authentication successful //表示成功驗證通過
19、安裝Clamav
[root@mail build] rpm --import http://dag.wieers.com/packages/RPM-GPG-KEY.dag.txt
[root@mail build] rpm --import RPM-GPG-KEY.dag.txt
[root@mail build] rpm -q gpg-pubkey --qf "%{summary} -> %{version}-%{release}\n"
gpg(CentOS-4 key ) -> 443e1821-421f218f
gpg(Dag Wieers (Dag Apt Repository v1.0) ) -> 6b8d79e6-3f49313d
[root@mail build] vi /etc/yum.repos.d/dag.repo
[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux
baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
gpgcheck=1
enabled=1
[root@mail build] yum update
[root@mail build] yum install clamav
20、升級病毒庫
[root@mail build] /usr/bin/freshclam
ClamAV update process started at Thu Mar 9 17:23:21 2006
main.cvd is up to date (version: 36, sigs: 44686, f-level: 7, builder: tkojm)
daily.cvd is up to date (version: 1319, sigs: 1376, f-level: 7, builder: ccordes)
21、安裝Spamassassin
[root@mail build] yum install spamassassin
[root@mail build] service spamassassin start
22、安裝MailScanner
[root@mail build] tar –zxf ../src/MailScanner-4.51.5-1.rpm.tar.gz
[root@mail build] MailScanner-4.51.5-1/install.sh
23、設置MailScanner
[root@mail build] chkconfig sendmail off
[root@mail build] chkconfig --level 2345 MailScanner on
[root@mail build] vi /etc/MailScanner/MailScanner.conf
%org-name% = toping.net
%org-long-name% = wooxian
%web-site% = www.toping.net
%report-dir% = /etc/MailScanner/reports/cn
Run As User = postfix
Run As Group = postfix
Incoming Queue Dir = /var/spool/postfix/hold
Outgoing Queue Dir = /var/spool/postfix/incoming
MTA = postfix
Virus Scanners = clamav
Always Include SpamAssassin Report = yes
Use SpamAssassin = yes
Required SpamAssassin Score = 6
SpamAssassin User State Dir = /var/spool/MailScanner/spamassassin
SpamAssassin Install Prefix = /usr/bin
SpamAssassin Local Rules Dir = /etc/MailScanner
[root@mail build] yum install unrar
[root@mail build] unrar x ../src/cn.rar
[root@mail build] mv cn /etc/MailScanner/reports/
[root@mail build] mv /etc/postfix/header_check /etc/postfix/header_check.bak
[root@mail build] vi /etc/postfix/header_check
/^Received:/ HOLD
[root@mail build] chown –R postfix:postfix /var/spool/MailScanner/*
[root@mail build] postfix stop
[root@mail build] service MailScanner start
24、測試病毒郵件
[root@mail build] telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 mail.test.com ESMTP Postfix
ehlo mail
250-mail.test.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250 8BITMIME
auth login
334 VXNlcm5hbWU6
dGVzdEB0ZXN0LmNvbQ== //用戶名（test@test.com）
334 UGFzc3dvcmQ6
MDAwMDAw // 密碼（000000）
235 Authentication successful //表示成功驗證通過
MAIL FROM:
250 Ok
RCPT TO:
250 Ok
DATA
354 End data with .
Subject:Virus test
X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
.
250 Ok: queued as F0C221CC20 //出現F0C221CC20這行表示mailscanner運行成功了
quit
221 Bye
Connection closed by foreign host.
收到郵件后會在主題會變成：{Virus?} Virus test
郵件內容會是以下內容：
警告: 此郵件有一個或多個附加檔案被移除
警告: 附加檔案名稱: (詳細訊息).
警告: 請參考此信件附加檔案 "toping.net-Attachment-Warning.txt" 取得更詳細的資料
此訊息由 MailScanner 電子郵件防護系統發出
-----------------------------------------
原有郵件附加檔案為 "詳細訊息" 被列入拒絕處理的名單.
且被替換為此訊息.
若您仍希望收到*被感染的*附加檔案,,請聯絡系統管理者.包含以下內容:
Thu Mar 9 15:57:25 2006 病毒偵測報告:
ClamAV: msg-3682-1.txt contains Eicar-Test-Signature
求助問題: 檢查 the toping.net () MailScanner 機器的 /var/spool/MailScanner/quarantine/20060309 (編號 639F13F97B.BBC3F).
--
系統管理者
以上內容出現表示mailscanner的病毒過濾生效。并成功運行！！
到此一臺具有反垃圾和反病毒的郵件服務器建成了，希望我的文檔對郵件服務器愛好者能有所幫助～！ 如果文檔中有任何問題可以發郵件給我指出來我會馬上改正。謝謝大家！祝大家好運！！scyz at toping.net
25、關于本文；
祝兄弟們好運。本人水平有限。如果發現文章中有什么錯誤和不當的地方請發郵件：scyz@toping.net。我會在第一時間給予答復。
26、更新日志；
新增使用mailscanner來對進出郵件進行監管。new
修正上一個版本的一些理解性和文件性錯誤。
主要“加強”了病毒過濾和垃圾郵件過濾，更加節約系統資源，使系統配置更簡單化。
垃圾郵件過濾基本上達到了95%的成功率
本文首次使用MailScanner+Clamav配合對郵件病毒進行過濾。
經過嚴格病毒郵件測試成功率達到了100%。
翻譯了病毒郵件提示為中文提示，讓系統更加的人性化。
27、參考文檔；
28、相關文檔；
《基于FreeBSD和Postfix的郵件系統與郵件列表的web mail安裝4.51》