centos上布置postfix邮件服务器

系统自带的sandmail会和postfix冲突

第一步卸载sandmail，yum remove sandmail

第二步：安装postfix ,dovecot,cyrus-sasl，直接yum安装

yum -y install devecot

yum -y install postfix

yum -y install cyrus-sasl

三、修改postfix的配置文件
[root@ser ~]# vim /etc/postfix/main.cf

myhostname = mail.eimam.com
mydomain = eimam.com
myorigin = eimam.com
inet_interfaces =all
mynetworks = 192.168.1.0/240
relay_domains = yjw.com, $mydomain
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,       mail.$mydomain, www.$mydomain, ftp.$mydomain
重启　postfix 服务

[root@ser ~]# service postfix restart
Shutting down postfix:                                     [  OK  ]
Starting postfix:                                          [  OK  ]
[root@ser ~]# chkconfig  postfix on
[root@ser ~]# chkconfig  dovecot on
修改dovecot的配置文件
vim /etc/dovecot.conf
protocols = imap imaps  pop3 pop3s(在后面启动dovecot时，说端口已经被使用，lsof -i tcp:端口，是pop3s占用了，如果出现这样的情况，把这里的pop3s去掉。)
listen = *
在iptables　里开放２５，110，143端口
[root@ser ~]# vim /etc/sysconfig/iptables
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 110 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 143 -j ACCEPT
重启iptables
[root@ser ~]# service iptables restart
Flushing firewall rules:                               [  OK  ]
Setting chains to policy ACCEPT: filter                [  OK  ]
Unloading iptables modules:                            [  OK
Applying iptables firewall rules:                     [  OK  ]
Loading additional iptables modules: ip_conntrack_netbios_n[  OK  ]ntrack_ftp
[root@ser ~]# chkconfig  saslauthd on
修改 /etc/sysconfig/saslauthd
[root@ser ~]# vim /etc/sysconfig/saslauthd

# Directory in which to place saslauthd's listening socket, pid file, and so
# on.  This directory must already exist.
SOCKETDIR=/var/run/saslauthd

# Mechanism to use when checking passwords.  Run "saslauthd -v" to get a list
# of which mechanism your installation was compiled with the ablity to use.
MECH=shadow

# Additional flags to pass to saslauthd on the command line.  See saslauthd(8)
# for the list of accepted flags.
FLAGS=
修改 /usr/lib/sasl2/smtpd.conf
[root@ser ~]# vim /usr/lib64/sasl2/smtpd.conf
pwcheck_method: saslauthd
测试 saslauthd
[root@ser ~]# service saslauthd  restart
[root@ser ~]# testsaslautd  -u yjw -p '020304'
0: OK "Success."
在postfix 的配置文件中，添加以下内容，使其支持SMTP认证
[root@ser ~]#  vim /etc/postfix/main.cf
message_size_limit = 1073741824   # 邮件的大小为10M
default_process_limit = 50
default_destination_concurrency_limit = 20

smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =  $myhostname

smtpd_sasl_application_name = smtpd

broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated,reject_unauth_destination
smtpd_client_restrictions = permit_sasl_authenticated
smtpd_sasl_security_options = noanonymous
测试 25端口
[root@ser ~]#  telnet mail.yjw.com 25 
Trying 192.168.1.2...
Connected to mail.yjw.com (192.168.1.2).
Escape character is '^]'.
220 mail.yjw.com ESMTP Postfix
EHLO  163.com
250-mail.yjw.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
quit
221 2.0.0 Bye
Connection closed by foreign host.
[root@ser ~]#

现在可以测试一下给root发一封邮件，echo "this is a test mail !"|mail -s mailname root

输入mail查看是否成功。也可给给QQ邮箱发，将root修改成QQ邮箱地址就可以了。

四、安装openwebmail
[root@ser ~]# vim /etc/yum.repos.d/openwebmail.repo 
[openwebmail]
## Thomas Chung
## 2008.05.29
name=Openwebmail for Fedora or Enterprise Linux
baseurl=http://openwebmail.org/openwebmail/download/redhat/rpm/release/
enabled=1
gpgcheck=1
gpgkey=http://openwebmail.org/openwebmail/download/redhat/rpm/release/RPM-GPG-KEY-openwebmail
#metadata_expire=0
若这样安装不成功，先安装 perl-Text-Iconv-1.4-1.2.el4.rf.i386.rpm

下载地址：http://rpm.pbone.net/index.php3?stat=26&dist=42&size=19383&name=perl-Text-Iconv-1.4-1.2.el4.rf.i386.rpm
[root@ser ~]#  yum -y  install openwebmail
[root@ser ~]# cd /var/www/cgi-bin/openwebmail/
[root@ser openwebmail]# ./openwebmail-tool.pl  --init  #出现Y/N时 ，按N.
修改openwebmail 的一些配置文件
[root@ser etc]# vim dbm.conf
dbm_ext                 .db
dbmopen_ext             .db
dbmopen_haslock         no
[root@ser etc]]# cd defaults/
[root@ser defaults]#  vim dbm.conf
dbm_ext                 .db
dbmopen_ext             .db
dbmopen_haslock         yes
smtpserver  192.168.1.2
[root@ser defaults]#  vim openwebmail.conf
domainnames             yjw.com
smtpserver              192.168.1.2
authpop3_server         192.168.1.2
再次初始化openwebmail
[root@ser defaults]# cd  http://www.cnblogs.com/openwebmail-tool.pl  --init 
出现Y/N 时，按Y。

把Postfix+Dovecot+Openwebmail 三者个格式统一下就行了
1.postfix 配置 main.cf
mail_spool_directory = /var/spool/mail
2.Dovecot 配置 Dovecot.conf
mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u
3.Openwebmail.conf
mailspooldir /var/spool/mail

修改apache配置

[root@ser ~]# vim /etc/httpd/conf/httpd.conf
ServerAdmin
[email protected]
ServerName  mail.yjw.com:80
AddHandler cgi-script .cgi .pl
五、登陆openwebmail
在IE 中输入  mail.yjw.com/cgi-bin/openwebmail/openwebmail.pl,  这个地址是不是很长，那么我们来点短点的
在  httpd的 配置文件中添加 下面 内容：
ScriptAlias  /mail    /var/www/cgi-bin/openwebmail/openwebmail.pl
这样在IE 中直接输入
mail.yjw.com/mail

如果出现了下面的问题

Couldn't create File /var/log/openwebmail.log! (Permission denied)
在网上找到解决办法了：如下方面 运行：
touch /var/log/openwebmail.log
chcon -u system_u /var/log/openwebmail.log
chcon -t httpd_sys_script_rw_t /var/log/openwebmail.log
chcon -t httpd_unconfined_script_exec_t /var/www/cgi-bin/openwebmail/openwebmail*
然后刷新了一下 OK ，很漂亮的界面出现了。