◆Webmail安装配置
可供postfix选择的webmail不是很丰富，通过比较，我选择extmail作为postfix的webmail客户端工具，本来extmail也包括像postfixadmin这样的web管理工具（extman），因为前面我们已经用了postfixadmin, 这里我只用extmail。
下载ExtMail-Solution-Linux-0.1.tar.gz后解压，然后把它移动到目录/var/www/extsuite/extmail。在apache的配置文件httpd.conf末尾追加下面的内容以便用户可以通过web方式访问extmail：
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DirectoryIndex index.html index.php index.cgi
ScriptAlias /extmail/cgi/ /mail/www/extsuite/extmail/cgi/
AllowOverride None
Options None
Order allow,deny
Allow from all
Alias /extmail /mail/www/extsuite/extmail/html
Options Indexes FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
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保存文件，重启apache服务即可在浏览器输入邮件服务器的url访问了。
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| 图 8 |
如果少了相应的perl模块，web页面会给出提示，按照提示把perl模块安装上去就正常了。到这里，extmail的配置还没有完呢，至少还有2个文件需要修改，这2个文件是webmail.cf和/var/www/extsuite/extmail/html/default/index.html.前一个是extmail的配置文件，后一个是页面文件显示方式。
webmail.cf的内容：更改过的内容用斜体红色字体显示
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[root@mailserv2 extmail]# more webmail.cf
# sys_config, the config file and webmail programe root
SYS_CONFIG = /var/www/extsuite/extmail/
# sys_langdir, the i18n dir
SYS_LANGDIR = /var/www/extsuite/extmail/lang
# sys_templdir, the template dir
SYS_TEMPLDIR = /var/www/extsuite/extmail/html
# sys_warn, show system warning or not, default to yes
SYS_SHOW_WARN = 0
# sys_permit_noquota, permit an account without qouta?
SYS_PERMIT_NOQUOTA = 1
# sys_sess_dir, the session dir
SYS_SESS_DIR = /tmp/
# sys_log_on = 1 | 0 - enable logging or not
SYS_LOG_ON = 1
# sys_log_type = file|syslog|nsyslog, syslog will save login
# or error info into mail.*, nsyslog is a replacement to syslog
# that will send log message to network syslogd
SYS_LOG_TYPE = syslog
# sys_log_file - path to log file, if sys_log_type = file
SYS_LOG_FILE = /var/log/extmail.log
# sys_sess_timeout, session timeout, default 3 hours (3h) format:
# number+(s|m|h|d|M|y); or only number, the 0 means that the
# session will last for 0 seconds, but if you specify the
# sys_sess_cookie_only = 1 then it means the session will expire
# after you close your browser :)
SYS_SESS_TIMEOUT = 0
# sys_sess_cookie_only = 0|1 use cookie only or include cgi "sid"
# parameter ? if set to true(1), the session will be expired after
# sys_sess_timeout if there is no any active request from browser
SYS_SESS_COOKIE_ONLY = 1
# sys_user_psize, user default page_size
SYS_USER_PSIZE = 10
# sys_user_tsize, user mail subject truncate size, valid type:
# auto => full text
# screen1 => 800x600
# screen2 => 1024x768
# screen3 => 1280x1024
SYS_USER_SCREEN = auto
# sys_user_lang, user default language
SYS_USER_LANG = en_US
# sys_user_template, user default template
SYS_USER_TEMPLATE = default
# sys_user_charset, user default charset
SYS_USER_CHARSET = utf-8
# sys_user_trylocal, user default outgoing encoding mechanism
SYS_USER_TRYLOCAL = 1
# sys_user_timezone, user default timezone
SYS_USER_TIMEZONE = +0800
# sys_user_* default parameters
SYS_USER_CCSENT = 0
SYS_USER_SHOW_HTML = 1
SYS_USER_COMPOSE_HTML = 1
SYS_USER_CONV_LINK =1
SYS_USER_ADDR2ABOOK = 1
# sys_min_pass_len, minimal password length, default 2
SYS_MIN_PASS_LEN = 2
# sys_mfilter_on, default is off
SYS_MFILTER_ON = 1
# sys_netdisk_on, default is off
SYS_NETDISK_ON = 0
# sys_debug_on, default is off
SYS_DEBUG_ON = 0
# sys auth type, mysql/ldap/authlib
SYS_AUTH_TYPE = mysql
# maildir_base, the base dir of user maildir, use absolute path
# if not set.
SYS_MAILDIR_BASE = /var/mailbox
# sys_auth_schema, vpopmail1/vpopmail2/virtual
# vpopmail1 => all user accounts in one table
# vpopmail2 => accounts in per domain table
SYS_AUTH_SCHEMA = virtual
# crypt_type, the default encrypt type of password, possible type
# currently is crypt|cleartext|plain|md5|md5crypt|plain-md5|ldap-md5|sha|sha1
SYS_CRYPT_TYPE = md5crypt
# if mysql, all relate parameters should prefix as SYS_MYSQL
SYS_MYSQL_USER = postfix
SYS_MYSQL_PASS = postfix
SYS_MYSQL_DB = postfix
SYS_MYSQL_HOST = localhost
SYS_MYSQL_SOCKET = /tmp/mysql.sock
# table name
SYS_MYSQL_TABLE = mailbox
SYS_MYSQL_ATTR_USERNAME = username
SYS_MYSQL_ATTR_DOMAIN = domain
SYS_MYSQL_ATTR_PASSWD = password
# sys_mysql_attr_clearpw - attribute to save clear password, useful for
# postmaster withdraw the original passwd if the end user forgot, but
# we highly recommend that you don‘t enable it for security reason
# SYS_MYSQL_ATTR_CLEARPW = clearpwd
SYS_MYSQL_ATTR_QUOTA = quota
SYS_MYSQL_ATTR_NDQUOTA = netdiskquota
SYS_MYSQL_ATTR_HOME = homedir
SYS_MYSQL_ATTR_MAILDIR = maildir
# service enable/disable attributes
# comment them out if you don‘t want their function
SYS_MYSQL_ATTR_DISABLEWEBMAIL = disablewebmail
SYS_MYSQL_ATTR_DISABLENETDISK = disablenetdisk
SYS_MYSQL_ATTR_ACTIVE = active
# if ldap, all relate parameters should prefix as SYS_LDAP
SYS_LDAP_BASE = o=extmailAccount,dc=example.com
SYS_LDAP_RDN = cn=Manager,dc=example.com
SYS_LDAP_PASS = secret
SYS_LDAP_HOST = localhost
# ldif attributes
SYS_LDAP_ATTR_USERNAME = mail
SYS_LDAP_ATTR_DOMAIN = virtualDomain
SYS_LDAP_ATTR_PASSWD = userPassword
# sys_ldap_attr_clearpw - attribute to save clear password, useful for
# postmaster withdraw the original passwd if the end user forgot, but
# we highly recommend that you don‘t enable it for security reason
# SYS_LDAP_ATTR_CLEARPW = clearPassword
SYS_LDAP_ATTR_QUOTA = mailQuota
SYS_LDAP_ATTR_NDQUOTA = netdiskQuota
SYS_LDAP_ATTR_HOME = homeDirectory
SYS_LDAP_ATTR_MAILDIR = mailMessageStore
# service enable/disable attributes
# comment them out if you don‘t want their function
SYS_LDAP_ATTR_DISABLEWEBMAIL = disablewebmail
SYS_LDAP_ATTR_DISABLENETDISK = disablenetdisk
SYS_LDAP_ATTR_ACTIVE = active
# if authlib, all relate parameters should prefix as AUTHLIB
SYS_AUTHLIB_SOCKET = /usr/local/authlib/var/spool/authdaemon/socket
# Global Abook support
# sys_g_abook_type, global abook type, valid is ldap|file, currently
# only support ldap, file module is under development :-)
SYS_G_ABOOK_TYPE = file
# if ldap, all relate parameters should prefix as SYS_G_ABOOK_LDAP
SYS_G_ABOOK_LDAP_HOST = localhost
SYS_G_ABOOK_LDAP_BASE = ou=AddressBook,dc=example.com
SYS_G_ABOOK_LDAP_ROOTDN = cn=Manager,dc=example.com
SYS_G_ABOOK_LDAP_ROOTPW = secret
SYS_G_ABOOK_LDAP_FILTER = objectClass=OfficePerson
# if file, all relate parameters should prefix as SYS_G_ABOOK_FILE
SYS_G_ABOOK_FILE_PATH = /mail/www/extsuite/extmail/globabook.cf
SYS_G_ABOOK_FILE_LOCK = 1
SYS_G_ABOOK_FILE_CONVERT = 0
SYS_G_ABOOK_FILE_CHARSET = utf-8 |
在文件/var/www/extsuite/extmail/html/default/index.html 加入下面的标识，可以得到不同
| <%domain%> |
邮件域的下拉列表，从而方便用户的使用。
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| 图 9 |
到这里，postfix的安装配置算是完成了。我们来逐个检查这些服务的正确性，简单的方法就是启动每一个服务，根据服务的运行来掌握各个服务是否正常。为了方便所有服务随开机自动启动，我把它们都加在了文件/etc/rc.local里，这些内容包括：
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################ normal services ############################
/usr/local/apache/bin/apachectl start
/usr/local/mysql/bin/mysqld_safe --user=mysql&
/usr/local/authlib/sbin/authdaemond start
############## postfix relatively ###########################
postfix start
/usr/local/imap/sbin/imapd start
################ antivirus and antispam #####################
/usr/bin/spamd --daemonize --pidfile /var/run/spamd.pid
/usr/local/sbin/amavisd start
/usr/local/clamav/sbin/clamd |
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[root@mailserv2 extmail]# crontab -l
0 0 1 * * root wget -N -P /usr/share/spamassassin www.ccert.edu.cn/spam/sa/Chinese_rules.cf;kill -HUP `cat /var/run/spamd.pid`
00 00 * * * /usr/local/clamav/bin/freshclam |
待所有的服务都正常后，用postfixadmin创建邮件域和用户。创建完毕，通过查看postfix日志/var/log/maillog了解操作是否成功；同时通过查看目录/var/mailbox里是否生成与创建的邮件帐户同名的目录。