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.

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.shuxun.wang
mydomain = shuxun.wang
myorigin = shuxun.wang
inet_interfaces =all
mynetworks = 192.168.1.0/240
relay_domains = shuxun.wang, $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.shuxun.wang 25
Trying 192.168.1.2...
Connected to mail.shuxun.wang (192.168.1.2).
Escape character is '^]'.
220 mail.shuxun.wang ESMTP Postfix
EHLO  163.com
250-mail.shuxun.wang
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.

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             shuxun.wang
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.shuxun.wang:80
AddHandler cgi-script .cgi .pl

五、登陆openwebmail
在IE 中输入

mail.shuxun.wang/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.shuxun.wang/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.