本文也是参考了网上的一些案例，但是在进行实际的操作过程中还是错误百出。经过几个白昼和黑夜的摸索，终于练成了--《Postfix企业级邮件系统进阶版》秘籍！
我比较崇尚开源精神，于是乎将自己的心得、知识和广大的互联网朋友们一起分享！
此邮件系统包含了，基本邮件发送接收、垃圾邮件过滤、病毒扫描、虚拟用户、后台管理、WebMail、转发、邮件防止伪造、自动回复等功能。
1、LAMP 配置在此不做配置，安装系统时选择好软件apache+php+mysql等。
2.安装courier-authlib
下载地址:
你可以通过下列地址查码安装代码: http://sourceforge.net/projects/courier/
安装之前添加postfix和maildrop相关的用户&用户组
groupadd postfix
groupadd postdrop
useradd postfix -g postfix -c "Postfix user" -d /home/postfix -s /sbin/nologin
groupadd vmail
useradd vmail -g vmail -d /mailbox
#### 特别提示 1:这个主要是设定邮件管理账号/进程启动帐号. 记住postfix和pstdrop组都中包含用户
postfix, vmail组中包括vmail用户,你可以通过直接编/etc/group文件,把这些用户加入相关的组。同时
，请记住这里的vmail的GI--502和UID--501，在下面文章的多处针使用到）.
[root@mail~]# mkdir /home/mail
[root@mail~]# chown vmail:vmail /mailbox
[root@mail~]# chmod -R 775 /mailbox
[root@mail~]# cd /usr/src/
[root@usr/src/]# tar jvxf courier-authlib-0.60.2.tar.bz2
[root@usr/src/]#cd /usr/src/courier-authlib-0.60.2
./configure --prefix=/usr/local/courier-authlib --without-authpam --without-authldap --without-authpwd --without-authshadow --without-authvchkpw --without-authpgsql --with-authmysql --with-mysql-libs=/usr/lib/mysql --with-mysql-includes=/usr/include/mysql --with-redhat --with-authmysqlrc=/usr/local/courier-authlib/etc/authmysqlrc --with-authdaemonrc=/usr/local/courier-authlib/etc/authdaemonrc CFLAGS="-march=i686 -O2 -fexpensive-optimizations" CXXFLAGS="-march=i686 -O2 -fexpensive-optimizations"
[root@usr/src/courier-authlib-0.60.2]# make
[root@usr/src/courier-authlib-0.60.2]# make install
[root@net-server:/]# cd /usr/local/courier-authlib/etc/
[root@usr/local/courier-authlib/etc]# cp authmysqlrc.dist authmysqlrc
[root@usr/local/courier-authlib/etc]# cp authdaemonrc.dist authdaemonrc
[root@usr/local/courier-authlib/etc]# vi authdaemonrc
authmodulelist="authmysql" <--使用Mysql用户认证-->
authmodulelistorig="authmysql" <--使用Mysql用户认证-->
daemons=5 <--已经存在, 没有就增加-->
authdaemonvar=/var/spool/authdaemon <--authlib会自己设定好此路径->
DEBUG_LOGIN=0 <--已经存在, 没有就增加, 2 为详细Debug模式，可以看更详细的日志-->
DEFAULTOPTIONS="" <--已经存在, 没有就增加-->
LOGGEROPTS="" <--已经存在, 没有就增加-->
[root@usr/local/courier-authlib/etc]# vi authmysqlrc
MYSQL_SERVER localhost <--mysql服务器名或IP地址-->
MYSQL_USERNAME postfix <--mysql用户名-->
MYSQL_PASSWORD ××××× <--mysql用户名密码-->
MYSQL_SOCKET /var/lib/mysql/mysql.sock <--mysql SOCKET,请根据你的实情而定-->
MYSQL_PORT 3306 <--mysql 端口号,请根据你的实情而定-->
MYSQL_OPT 0
MYSQL_DATABASE postfix
MYSQL_USER_TABLE mailbox
MYSQL_CRYPT_PWFIELD password
MYSQL_UID_FIELD 501 <--mysql表中, 管理authlib用户的UID.前面我们就用的vmail-->
MYSQL_GID_FIELD 502 <--mysql表中, 管理authlib用户的GID.前面我们就用的vmail-->
### vmail---->UID:501, GID:502####
MYSQL_LOGIN_FIELD username
MYSQL_HOME_FIELD concat('/home/mail/',maildir)
MYSQL_NAME_FIELD name
MYSQL_MAILDIR_FIELD concat('/home/mail/',maildir)
MYSQL_QUOTA_FIELD quota
MYSQL_WHERE_CLAUSE active='1'
注意以上的文字最后不能有空格否则无法连接数据库！！！！
启动courier-authlib
[root@mail]# cp courier-authlib.sysvinit /etc/init.d/courier-authlib
[root@mail~]#chmod 755 /etc/rc.d/init.d/courier-authlib
[root@mail~]# service courier-authlib start
[root@mail~]#chkconfig --add courier-authlib
[root@mail~]#chkconfig --level 35 courier-authlib on
=============================================================
编译安装配置认证cyrus-sasl
cyrus-sasl-2.1.22.tar.gz
./configure --prefix=/usr/local/cyrus-sasl --enable-plain --enable-cram --enable-digest --enable-login --enable-sql --disable-anon --disable-ntlm --disable-gssapi --disable-krb4 --disable-otp --disable-srp --disable-srp-setpass --with-authdaemond=/usr/local/courier-authlib/var/spool/authdaemon/socket --with-mysql=/usr/lib/mysql --with-mysql-includes=/usr/include/mysql/ --with-mysql-libs=/usr/lib/mysql
make
make install
做软连接
ln -s /usr/local/cyrus-sasl/lib/sasl2/ /usr/lib/
vi /usr/local/cyrus-sasl/lib/sasl2/smtpd.conf
vi /usr/lib/sasl2/smtpd.conf 为以下内容
vi /usr/lib/sasl/smtpd.conf
pwcheck_method: authdaemond
log_level: 3
mech_list: plain login
authdaemond_path: /usr/local/courier-authlib/var/spool/authdaemon/socket
###
postfix/smtpd[6349]: sql_select option missing
postfix/smtpd[6349]: auxpropfunc error no mechanism available
###如有报告上述如下错误请添加如下代码
allow_plaintext: true
auxprop_plugin: mysql
sql_hostnames: localhost
sql_user: postfix
sql_passwd: ×××××
sql_database: postfix
sql_select: select password from mailbox where username='%u'
设置自启动：
chkconfig –-level 35 saslauthd on
service saslauthd start
=============================================================
安装postfix postfix-2.5.1-1.mysql.sasl2.vda.rhel4.i386.rpm #此版本支持mysql sasl2 免去编译的麻烦#
postfix-2.5.1-1.mysql.sasl2.vda.rhel5.i386.rpm
生成别名二进制文件，这个步骤如果忽略，会造成postfix效率极低
newaliases
rpm -e sendmail --nodeps 删除sendmail
相关配置文件
编辑/etc/postfix/main.cf 为以下内容
#=======================BASE Settings==========================
myhostname = mail.epanel.cn
mydomain = epanel.cn
myorigin = $mydomain
mydestination = $myhostname localhost localhost.$mydomain
mynetworks = 192.168.1.0/24 127.0.0.0/8
inet_interfaces = all
#=====================Vritual Mailbox settings======================
virtual_mailbox_base = /home/mail
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_alias_domains =
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_uid_maps = static:501
virtual_gid_maps = static:502
virtual_transport = virtual
maildrop_destination_recipient_limit = 1
maildrop_destination_concurrency_limit = 1
#========================QUOTA============================
message_size_limit = 14336000
virtual_mailbox_limit = 20971520
virtual_create_maildirsize = yes
virtual_mailbox_extended = yes
virtual_mailbox_limit_maps = mysql:/etc/postfix/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 Settings=========================
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_invalid_hostname,reject_non_fqdn_hostname,reject_unknown_sender_domain,reject_non_fqdn_sender,reject_non_fqdn_recipient,reject_unknown_recipient_domain,reject_unauth_pipelining,reject_unauth_destination,permit
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname 注意 如果测试出错，删除！
smtpd_sasl_security_options = noanonymous
smtpd_sasl_application_name = smtpd
smtpd_banner=$myhostname ESMTP "Version not Available"
readme_directory = no
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
html_directory = no
setgid_group = postdrop
command_directory = /usr/sbin
manpage_directory = /usr/local/man
daemon_directory = /usr/libexec/postfix
newaliases_path = /usr/bin/newaliases
mailq_path = /usr/bin/mailq
queue_directory = /var/spool/postfix
mail_owner = postfix
#=======================ANTI-SPAM=========================
smtpd_recipient_restrictions =
permit_sasl_authenticated
permit_mynetworks
reject_invalid_hostname
reject_non_fqdn_hostname
reject_unknown_sender_domain
reject_non_fqdn_sender
reject_non_fqdn_recipient
reject_unknown_recipient_domain
reject_unauth_pipelining
reject_unauth_destination
===========================================================
编辑 vi /etc/postfix/mysql_virtual_alias_maps.cf 为以下内容
user = postfix
password = ×××××
hosts = localhost
dbname = postfix
table = alias
select_field = goto
where_field = address
additional_conditions = AND active = '1'
编辑 vi /etc/postfix/mysql_virtual_domains_maps.cf 为以下内容
user = postfix
password = ×××××
hosts = localhost
dbname = postfix
table = domain
select_field = description
where_field = domain
additional_conditions = AND active = '1'
编辑 vi /etc/postfix/mysql_virtual_mailbox_limit_maps.cf 为以下内容
user = postfix
password = ×××××
hosts = localhost
dbname = postfix
table = mailbox
select_field = quota
where_field = username
additional_conditions = AND active = '1'
编辑 vi /etc/postfix/mysql_virtual_mailbox_maps.cf 为以下内容
user = postfix
password = ×××××
hosts = localhost
dbname = postfix
table = mailbox
select_field = maildir
where_field = username
additional_conditions = AND active = '1'
===========================================================
dovecot POP3系统配置：
vi dovecot.conf 为以下内容：
protocols=pop3 pop3s
listen=*
disable_plaintext_auth = no
auth_debug = yes
log_path = /var/log/dovecot.log
mail_location =maildir:/mailbox/%u
pop3_uidl_format=%08Xu%08Xv
first_valid_uid = 501
auth default {
mechanisms = PLAIN LOGIN
passdb sql {
args = /etc/dovecot-mysql.conf
}
userdb sql {
args = /etc/dovecot-mysql.conf
}
socket listen {
client {
path = /var/run/dovecot/auth-client
mode = 0660
user = postfix
group = postfix
}
}
}
===========================================================
vi dovecot-mysql.conf 以下内容：
driver = mysql
connect = host=localhost dbname=postfix user=postfix password= ×××××
default_pass_scheme = MD5
user_query = SELECT maildir, 501 AS uid, 502 AS gid FROM mailbox WHERE username = '%u'
===========================================================
待完。。。。。。
本文转自andylhz 51CTO博客，原文链接：http://blog.51cto.com/andylhz2009/818964，如需转载请自行联系原作者
