2.配置postfix支持虚拟域
cd /var/www/extsuite/extman/docs/
拷贝模板文件：
cp mysql_virtual_alias_maps.cf mysql_virtual_domains_maps.cf mysql_virtual_mailbox_maps.cf /etc/postfix/
useradd -u 600 vmail
postconf -e inet_interfaces=all
postconf -e virtual_mailbox_base=/home/vmail
postconf -e virtual_uid_maps=static:600
postconf -e virtual_gid_maps=static:600
postfix读取模板文件：
postconf -e virtual_alias_maps=mysql:/etc/postfix/mysql_virtual_alias_maps.cf
postconf -e virtual_mailbox_domains=mysql:/etc/postfix/mysql_virtual_domains_maps.cf
postconf -e virtual_mailbox_maps=mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
重启postfix，查看是否成功！
/etc/init.d/postfix restart
echo "hello world" | mail -s test support@exmail.org
[root@desktop19 dovecot]# cd /home/vmail/
[root@desktop19 vmail]# ls
extmail.org 目录存在则postfix配置成功
3.配置MDA(dovecot)
yum install dovecot dovecot-mysql -y
cd /etc/dovecot/conf.d/
vi 10-mail.conf
mail_location = maildir:/home/vmail/%d/%n/Maildir 邮件收取配置，这里采用mairdir形式
first_valid_uid = 600
vim 10-auth.conf
!include auth-sql.conf.ext 去掉注释
cd ../
vi dovecot-sql.conf.ext
driver =mysql
connect = host=localhost dbname=extmail user=extmail password=extmail
default_pass_scheme = MD5
password_query =
SELECT username, domain, password
FROM mailbox WHERE username = '%u' and domain = '%d'
user_query = SELECT maildir, 600 AS uid, 600 AS gid FROM mailbox WHERE username = '%u'
启动dovecot,测试
/etc/init.d/dovecot start
***************************************************
[root@desktop19 Maildir]# telnet localhost 110
Trying ::1...
Connected to localhost.
Escape character is '^]'.
+OK Dovecot ready. <1832.1.513560b4.LftMXp8dtjujF/reBTodLw==@desktop19.example.com>
user postmaster@extmail.org
+OK
pass extmail
+OK Logged in.
list
+OK 2 messages:
1 568
2 568
***************************************************
4.配置web界面：
vi /etc/httpd/conf/httpd.conf
*************************************************************
<VirtualHost *:80>
ServerName www.example.com
DocumentRoot /var/www/html
</VirtualHost>
<VirtualHost *:80>
ServerName mail.extmail.org
DocumentRoot /var/www/extsuite/extmail/html/
ScriptAlias /extmail/cgi /var/www/extsuite/extmail/cgi
Alias /extmail /var/www/extsuite/extmail/html
ScriptAlias /extman/cgi /var/www/extsuite/extman/cgi
Alias /extman /var/www/extsuite/extman/html
SuexecUserGroup vmail vmail
</VirtualHost>
*************************************************************
cd /var/www/extsuite/extmail
chown vmail.vmail cgi/ -R
cp webmail.cf.default webmail.cf
vi webmail.cf
SYS_MAILDIR_BASE = /home/vmail
SYS_MYSQL_USER = extmail
SYS_MYSQL_PASS = extmail
SYS_CRYPT_TYPE = plain
cd /var/www/extsuite/extman
chown vmail.vmail cgi/ -R
cp webman.cf.default webman.cf
vi webman.cf
SYS_MAILDIR_BASE = /home/vmail
SYS_SESS_DIR = /tmp/
SYS_CAPTCHA_LEN = 4
SYS_CRYPT_TYPE = plain
启动httpd，测试界面：
如图2，
则安装CGI：
安装：如图5
cp -r /var/www/extsuite/extman/addon/mailgraph_ext/ /usr/local/
/var/www/extsuite/extman/daemon/cmdserver -d
/usr/local/mailgraph_ext/mailgraph-init restart
下载病毒库管理软件：
clamav-0.97.6-1.el6.rf.x86_64.rpm clamav-milter-0.97.6-1.el6.rf.x86_64.rpm
clamav-db-0.97.6-1.el6.rf.x86_64.rpm clamd-0.97.6-1.el6.rf.x86_64.rpm
更新病毒库：
[root@desktop19 mnt]# freshclam
ClamAV update process started at Tue Mar 5 15:35:12 2013
main.cvd is up to date (version: 54, sigs: 1044387, f-level: 60, builder: sven)
daily.cvd is up to date (version: 16784, sigs: 871048, f-level: 63, builder: neo)
bytecode.cvd is up to date (version: 214, sigs: 41, f-level: 63, builder: neo)
tar zxf MailScanner-4.84.5-3.rpm.tar.gz
cd MailScanner-4.84.5-3
./install.sh
配置MailScanner和postfix
vi /etc/MailScanner/MailScanner.conf
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
SpamAssassin User State Dir = /var/spool/MailScanner/spamassassin
mkdir /var/spool/MailScanner/spamassassin
chown -R postfix.postfix /var/spool/MailScanner/*
postconf -e header_checks=regexp:/etc/postfix/header_checks
echo /^Received:/ HOLD >> /etc/postfix/header_checks
测试：
信件携带病毒时，查看日志：tail -f /var/log/maillog
若信件正常，则显示已信任
2.数据库支持
make -f Makefile.init makefiles 'CCARGS=-DHAS_MYSQL -I/usr/include/mysql' 'AUXLIBS=-L/usr/lib64/mysql -lmysqlclient -lz -lm'
make upgrade
3.加密支持
make -f Makefile.init makefiles 'CCARGS=-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I/usr/include/sasl' 'AUXLIBS=-L/usr/lib64/mysql -lmysqlclient -lz -lm -R/usr/lib64 -lsasl2'
make upgrade
