十、安装postfix（邮件帐号后台web管理工具）
ftp://postfix.cn99.com/postfix/index.html
#groupadd -g 2525 postfix
#useradd -g postfix -u 2525 -s /sbin/nologin -M postfix
#groupadd -g 2526 postdrop
#useradd -g postdrop -u 2526 -s /bin/false -M postdrop
#tar zxvf postfix-2.6-20080824.tar.gz -C /usr/local/src/
#cd /usr/local/src/postfix-2.6-20080824/
#make makefiles 'CCARGS=-DHAS_MYSQL -I/usr/local/mysql/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/local/sasl2/include/sasl -I/usr/local/BerkeleyDB/include-DUSE_TLS -I/usr/local/ssl/include/openssl ' 'AUXLIBS=-L/usr/local/mysql/lib/mysql -lmysqlclient -lz -lm -L/usr/local/sasl2/lib -lsasl2 -L/usr/local/BerkeleyDB/lib -L/usr/local/ssl/lib -lssl -lcrypto'
#make
#cp /usr/local/mysql/lib/mysql/libmysqlclient.so.15 /usr/lib[f1]
#make install
install_root: [/]
tempdir: [/soft// postfix-2.4.5] /tmp
config_directory: [/etc/postfix]
command_directory: [/usr/sbin] /usr/local/postfix/sbin
daemon_directory: [/usr/libexec/postfix] /usr/local/postfix/libexec
data_directory: [/var/lib/postfix]
html_directory: [no] /var/www/postfix_html
mail_owner: [postfix]
mailq_path: [/usr/bin/mailq]
manpages: [/usr/local/man] /usr/local/postfix/man
newaliases_path: [/usr/bin/newaliases]
queue_directory: [/var/spool/postfix]
readme_directory: [no]
sendmail_path: [/usr/sbin/sendmail]
setgid_group: [postdrop]
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：
# mv /etc/aliases /etc/aliases.OFF
#ln -sv /etc/postfix/aliases /etc/aliases
#newaliases
#vim /etc/postfix/main.cf
修改以下几项为您需要的配置
myhostname = mail.test.com
myorigin = test.com
mydomain = test.com
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mynetworks = 172.16.0.0/16, 127.0.0.0/8
说明:
myorigin参数用来指明发件人所在的域名；
mydestination参数指定postfix接收邮件时收件人的域名，即您的postfix系统要接收到哪个域名的邮件；
myhostname 参数指定运行postfix邮件系统的主机的主机名，默认情况下，其值被设定为本地机器名；
mydomain参数指定您的域名，默认情况下，postfix将myhostname的第一部分删除而作为mydomain的值；
mynetworks 参数指定你所在的网络的网络地址，postfix系统根据其值来区别用户是远程的还是本地的，如果是本地网络用户则允许其访问；
inet_interfaces 参数指定postfix系统监听的网络接口；
注意：
1、在postfix的配置文件中，参数行和注释行是不能处在同一行中的；
2、任何一个参数的值都不需要加引号，否则，引号将会被当作参数值的一部分来使用；
3、每修改参数及其值后执行 postfix reload 即可令其生效；但若修改了inet_interfaces，则需重新启动postfix；
4、如果一个参数的值有多个，可以将它们放在不同的行中，只需要在其后的每个行前多置一个空格即可；postfix会把第一个字符为空格或tab的文本行视为上一行的延续；
启动postfix
# /usr/local/postfix/sbin/postfix start
#echo '/usr/local/postfix/sbin/postfix start' >> /etc/rc.local
#useradd test
# 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.test.com
250-mail.test.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
mail from:root@test.com
250 2.1.0 Ok
rcpt to:test@test.com
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
subject:hello
This is a test.
.
250 2.0.0 Ok: queued as 8BE805755A
quit
221 2.0.0 Bye
Connection closed by foreign host.
#su – test
Mail version 8.1 6/6/93. Type ? for help.
"/var/spool/mail/test": 1 message 1 new
>N 1 root@test.com Mon Oct 12 21:47 15/488 "hello"
& 1
Message 1:
From root@test.com Mon Oct 12 21:47:30 2009
X-Original-To: test@test.com
Delivered-To: test@test.com
subject:hello
Date: Mon, 12 Oct 2009 21:46:59 -0400 (EDT)
From: root@test.com
To: undisclosed-recipients:;
This is a test.
& q
Saved 1 message in mbox
[f1]如果配置没有提示需要拷贝该库文件到指定位置
十一、为postfix开启基于cyrus-sasl的认证
使用以下命令验正postfix是否支持cyrus风格的sasl认证，如果您的输出为以下结果，则是支持的
# /usr/local/postfix/sbin/postconf -a
cyrus
dovecot
#vim /etc/postfix/main.cf
最下面添加以下内容：
############################CYRUS-SASL############################
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
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname
smtpd_sasl_security_options = noanonymous
smtpd_sasl_application_name = smtpd
smtpd_banner = Welcome to our $myhostname ESMTP,Warning: Version not Available!
#vim /usr/local/lib/sasl2/smtpd.conf
添加如下内容：
pwcheck_method: saslauthd
mech_list: PLAIN LOGIN
让postfix重新加载配置文件
# /usr/local/postfix/sbin/postfix reload
# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 Welcome to our mail.test.com ESMTP,Warning: Version not Available!
ehlo mail.test.com
250-mail.test.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH=PLAIN LOGIN
[f1] 250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
[f1]有这两行输出即可
十二、让postfix支持虚拟域和虚拟用户
#vim /etc/postfix/main.cf
文件最后添加以下内容：
########################Virtual Mailbox Settings########################
virtual_mailbox_base = /var/mailbox/
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:2525
virtual_gid_maps = static:2525
virtual_transport = virtual
maildrop_destination_recipient_limit = 1
maildrop_destination_concurrency_limit = 1
##########################QUOTA Settings########################
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 Tidy your mailbox and try again later.
virtual_overquota_bounce = yes
# vim /etc/postfix/mysql_virtual_alias_maps.cf
写入以下内容：
user = extmail
password = extmail
hosts = localhost
dbname = extmail
table = alias
select_field = goto
where_field = address
#vim /etc/postfix/mysql_virtual_domains_maps.cf
添加以下内容：
user = extmail
password = extmail
hosts = localhost
dbname = extmail
table = domain
select_field = description
where_field = domain
#vim /etc/postfix/mysql_virtual_mailbox_limit_maps.cf
写入以下内容：
user = extmail
password = extmail
hosts = localhost
dbname = extmail
table = mailbox
select_field = quota
where_field = username
#vim /etc/postfix/mysql_virtual_mailbox_maps.cf
写入以下内容：
user = extmail
password = extmail
hosts = localhost
dbname = extmail
table = mailbox
select_field = maildir
where_field = username
这里用到的数据库及用户的建立可以后文中的extmail说明部分来实现，您可以参照那一部分来理解这里指定的数据库及其用户名等
十三、安装courier-authlib（用于sasl用户密码的认证）
#yum install gdbm-devel
#tar zxvf courier-authlib_0.61.0.orig.tar.gz -C /usr/local/src/
#cd /usr/local/src/courier-authlib-0.61.0.orig/
#./configure --prefix=/usr/local/courier-authlib --sysconfdir=/etc --without-authpam --without-authldap --without-authpwd --without-authshadow --without-authvchkpw --without-authpgsql --with-authmysql --with-mysql-libs=/usr/local/mysql/lib/mysql --with-mysql-includes=/usr/local/mysql/include/mysql --with-redhat --with-authmysqlrc=/etc/authmysqlrc --with-authdaemonrc=/etc/authdaemonrc CFLAGS="-march=i686 -O2 -fexpensive-optimizations" CXXFLAGS="-march=i686 -O2 -fexpensive-optimizations"
#make
#make install
#make install-migrate
#make install-configure
# chmod 755 /usr/local/courier-authlib/var/spool/authdaemon
# cp /etc/authdaemonrc.dist /etc/authdaemonrc
# cp /etc/authmysqlrc.dist /etc/authmysqlrc
#vim /etc/authdaemonrc
修改以下三个配置项：
authmodulelist="authmysql"
authmodulelistorig="authmysql"
daemons=10
#>/etc/authmysqlrc
#vim /etc/authmysqlrc
写入以下内容：
MYSQL_SERVER localhost
MYSQL_PORT 3306
MYSQL_USERNAME extmail
MYSQL_PASSWORD extmail
MYSQL_SOCKET /tmp/mysql.sock
MYSQL_DATABASE extmail
MYSQL_USER_TABLE mailbox
MYSQL_CRYPT_PWFIELD password
MYSQL_UID_FIELD '2525'
MYSQL_GID_FIELD '2525'
MYSQL_LOGIN_FIELD username
MYSQL_HOME_FIELD concat('/var/mailbox/',maildir)
MYSQL_NAME_FIELD name
MYSQL_MAILDIR_FIELD concat('/var/mailbox/',maildir)
# cp courier-authlib.sysvinit /etc/init.d/courier-authlib
# chmod 755 /etc/init.d/courier-authlib
# chkconfig --add courier-authlib
# chkconfig courier-authlib on
#echo "/usr/local/courier-authlib/lib/courier-authlib" >> /etc/ld.so.conf
# ldconfig -v
# service courier-authlib start
十四、安装courier-imap（Pop3及IMAP服务）
# tar jxvf courier-imap-4.1.0.tar.tar -C /usr/local/src/
# cd /usr/local/src/courier-imap-4.1.0/
#./configure --prefix=/usr/local/courier-imap --with-redhat --enable-unicode --disable-root-check --with-trashquota --without-ipv6 CPPFLAGS='-I/usr/local/ssl/include/openssl -I/usr/local/courier-authlib/include' LDFLAGS='-L/usr/local/courier-authlib/lib/courier-authlib' COURIERAUTHCONFIG='/usr/local/courier-authlib/bin/courierauthconfig'
#make
#make install
# cp /usr/local/courier-imap/etc/imapd.dist /usr/local/courier-imap/etc/imapd
# cp /usr/local/courier-imap/etc/imapd-ssl.dist /usr/local/courier-imap/etc/imapd-ssl
# cp /usr/local/courier-imap/etc/pop3d.dist /usr/local/courier-imap/etc/pop3d
# cp /usr/local/courier-imap/etc/pop3d-ssl.dist /usr/local/courier-imap/etc/pop3d-ssl
配置Courier-IMAP，为用户提供pop3服务：
#vim /usr/local/courier-imap/etc/pop3d
修改下面配置项针对pop3协议支持
POP3DSTART=YES
#mkdir -pv /var/mailbox
# chown -R postfix:postfix /var/mailbox
#cp courier-imap.sysvinit /etc/rc.d/init.d/courier-imapd
#chmod 755 /etc/rc.d/init.d/courier-imapd
#chkconfig --add courier-imapd
#chkconfig --level 2345 courier-imapd on
#service courier-imapd start
#vim /usr/local/lib/sasl2/smtpd.conf
文件末尾写入以下内容
pwcheck_method: authdaemond
log_level: 3
mech_list: LAIN LOGIN
authdaemond_path:/usr/local/courier-authlib/var/spool/authdaemon/socket
allow_plaintext: true
auxprop_plugin: mysql
sql_hostnames: localhost
sql_user: extmail
sql_passwd: extmail
sql_database: extmail
sql_select: select password from mailbox where username='%u'
#/etc/init.d/courier-authlib restart
未完待续.......
本文转自legendfu51CTO博客，原文链接： http://blog.51cto.com/legendfu/1073369，如需转载请自行联系原作者
