CentOS4.4下邮件服务器架设笔记之基本功能实现 
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1。安装centos4.4,安装时只选择一个"开发工具"的包，其它都不勾选，安装完毕；
2。配置yum更新库:
vi /etc/yum.repos.d/dag.repo
[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag http://mirror.be10.com/centos/$releasever/os/$basearch/
http://centos.hostlink.com.hk/$releasever/os/$basearch/ http://ftp.hostrino.com/pub/centos/ gpgcheck=1 enabled=1 rpm --import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt 还有一个导入:(此处暂不导入)
3。解决putty连接显示乱码：
vi /etc/sysconfig/i18n将里面内容替换成下面；
LANG="en_US:en"
SUPPORTED="en_US:en:en_US:zh:en_US.en:en_US:en" SYSFONT="latarcyrheb-sun16" 4。关闭cups(打印服务),
[root@mail log]# /etc/rc.d/init.d/cups stop
Stopping cups: [ OK ] [root@mail log]# chkconfig cups off [root@mail log]# 5。解决时间同步问题：
[root@mail ~]# yum install ntp
Dependencies Resolved
=============================================================================
Package Arch Version Repository Size ============================================================================= Installing: ntp i386 4.2.0.a.20040617-6.el4 base 1.2 M Transaction Summary
============================================================================= Install 1 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 1.2 M Is this ok [y/N]: y 安装完毕后，就可以有ntpdatae命令了，可以使用ntpdate 命令进行同步了！否则没有ntpdate命令。 [root@mail /]# vi /etc/crontab
将下面：
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly 修改为：
#01 * * * * root run-parts /etc/cron.hourly
#02 4 * * * root run-parts /etc/cron.daily #22 4 * * 0 root run-parts /etc/cron.weekly #42 4 1 * * root run-parts /etc/cron.monthly 并添加命令行：意思是每隔三分钟与时钟服务器210.72.145.44同步一次时间 */3 * * * * root /usr/sbin/ntpdate 210.72.145.44 > /dev/null 2>&1
改完后重启一下服务：
[root@mail /]# service crond restart
Stopping crond: [ OK ] Starting crond: [ OK ] [root@mail /]# 6.安装postfix,dovecot,apache，其中蓝色字体，是相依赖的包,绿色为安装的顺序;
查看域名MX记录
[root@mail postfix]# host -t mx centos.eb.cn
centos.eb.cn mail is handled by 10 mail.centos.eb.cn. [root@mail etc]yum install postfix
[root@mail etc]yum install dovecot
Dependencies Resolved
=============================================================================
Package Arch Version Repository Size ============================================================================= Installing: dovecot i386 0.99.11-8.EL4 base 614 k Installing for dependencies: mysql i386 4.1.20-2.RHEL4.1 base 2.9 M perl-DBI i386 1.58-2.el4.rf dag 819 k perl-Net-Daemon noarch 0.43-1.el4.rf dag 44 k perl-PlRPC noarch 0.2020-1.el4.rf dag 33 k postgresql-libs i386 7.4.17-1.RHEL4.1 update 147 k Transaction Summary
============================================================================= Install 6 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 4.5 M Is this ok [y/N]: y Downloading Packages: (1/6): postgresql-libs-7. 16% |==== | 24 kB 00:39 ETA Installing: perl-Net-Daemon ######################### [1/6] Installing: perl-PlRPC ######################### [2/6] Installing: perl-DBI ######################### [3/6] Installing: mysql ######################### [4/6] Installing: postgresql-libs ######################### [5/6] Installing: dovecot ######################### [6/6] [root@mail etc]yum install httpd
=============================================================================
Package Arch Version Repository Size ============================================================================= Installing: httpd i386 2.0.52-32.3.ent.centos4 update 888 k Installing for dependencies: apr i386 0.9.4-24.5.c4.2 base 88 k apr-util i386 0.9.4-21 base 51 k httpd-suexec i386 2.0.52-32.3.ent.centos4 update 29 k Updating for dependencies: initscripts i386 7.93.29.EL-1.centos4 base 1.1 M Transaction Summary
============================================================================= Install 4 Package(s) Update 1 Package(s) Remove 0 Package(s) Total download size: 2.2 M Downloading Packages: (1/5): initscripts-7.93.2 9% |== | 112 kB 03:09 ETA Running Transaction Installing: apr ######################### [1/6] Installing: apr-util ######################### [2/6] Updating : initscripts ######################### [3/6] Installing: httpd ######################### [4/6] Installing: httpd-suexec ######################### [5/6] Cleanup : initscripts ######################### [6/6] 7。POSTFIX的配置方法： [root@mail /]# cd /etc/postfix
[root@mail postfix]# cp main.cf main.cf.bak [root@mail postfix]# vi main.cf修改如下面所示:粉色字为待修改,绿色为修改后) #myhostname = host.domain.tld
myhostname = mail.centos.eb.cn #mydomain = domain.tld mydomain = centos.eb.cn #myorigin = $mydomain
myorigin = $mydomain inet_interfaces = localhost #inet_interfaces = localhost
inet_interfaces = all mydestination = $myhostname, localhost.$mydomain, localhost
#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain #mydestination = $myhostname, localhost.$mydomain, localhost mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain #relay_domains = $mydestination relay_domains = $mydestination
#mynetworks = 168.100.189.0/28, 127.0.0.0/8 mynetworks = 10.0.0.0/8, 127.0.0.0/8 #home_mailbox = Maildir/
home_mailbox = Maildir/ #smtpd_banner = $myhostname ESMTP $mail_name
#smtpd_banner = $myhostname ESMTP $mail_name ($mail_version) smtpd_banner = $myhostname ESMTP mailserver maintanace by ---Weihu.Yan--- (此段追加在文件结尾)
#append smtp auth config
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = $myhostname smtpd_sasl_security_options = noanonymous smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination message_size_limit = 20971520 (表附件大小为20M,20*1024*1024) 配置SMTP认证:
[root@mail postfix]# vi /usr/lib/sasl2/smtpd.conf修改如下:
pwcheck_method: saslauthd
#pwcheck_method: saslauthd pwcheck_method: auxprop (表示不使用系统用户认证) [root@mail postfix]# vi /etc/sysconfig/saslauthd MECH=shadow#MECH=shadow
FLAGS=FLAGS=sasldb 定义认证方式为sasldb2
建立用户邮箱模板:
[root@mail postfix]# mkdir /etc/skel/Maildir
[root@mail postfix]# chmod 700 /etc/skel/Maildir 若已有用户,刚为已存在用户建立邮箱的方法如下: [root@mail ~]# mkdir /home/leeki.yan/Maildir 为用户（这里以leeki.yan用户为例）建立邮箱目录 [root@mail ~]# chmod 700 /home/leeki.yan/Maildir 设置该用户邮箱目录属性为700 [root@mail ~]# chown leeki.yan. /home/leeki.yan/Maildir 设置该用户邮箱目录为该用户所有 为用户设置SMTP密码:(以root账户为例)
[root@mail postfix]# saslpasswd2 -u mail.centos.eb.cn -c root
Password: Again (for verification): [root@mail postfix]# 改变SASL的归属
[root@mail postfix]# chgrp postfix /etc/sasldb2 [root@mail postfix]# chmod 640 /etc/sasldb2 关闭sendmail,及设置不自动启动,并修改默认的MTA
[root@mail postfix]# /etc/rc.d/init.d/sendmail stop
Shutting down sendmail: [ OK ] Shutting down sm-client: [ OK ] [root@mail postfix]# chkconfig sendmail off [root@mail postfix]# chkconfig --list sendmail sendmail 0:off 1:off 2:off 3:off 4:off 5:off 6:off [root@mail postfix]# alternatives --config mta There are 2 programs which provide 'mta'.
Selection Command
----------------------------------------------- *+ 1 /usr/sbin/sendmail.sendmail 2 /usr/sbin/sendmail.postfix Enter to keep the current selection[+], or type selection number: 2
[root@mail postfix]# 启动SMTP认证及Postfix服务，并设置相应服务为自启动
[root@mail postfix]# chkconfig saslauthd on
[root@mail postfix]# chkconfig --list saslauthd saslauthd 0:off 1:off 2:on 3:on 4:on 5:on 6:off [root@mail postfix]# chkconfig postfix on [root@mail postfix]# chkconfig --list postfix postfix 0:off 1:off 2:on 3:on 4:on 5:on 6:off [root@mail postfix]# /etc/rc.d/init.d/saslauthd start Starting saslauthd: [ OK ] [root@mail postfix]# /etc/rc.d/init.d/postfix start Starting postfix: [ OK ] [root@mail postfix]# 查看smtp端口是否为打开 [root@mail postfix]# netstat -tl
Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:809 *:* LISTEN tcp 0 0 *:sunrpc *:* LISTEN tcp 0 0 *:ssh *:* LISTEN tcp 0 0 *:smtp *:* LISTEN [root@mail postfix]# 8。配置dovecot
[root@mail etc]# vi /etc/dovecot.conf(修改如下面所示:粉色字为待修改,绿色为修改后)
#protocols = imap imaps
protocols = imap imaps pop3 pop3s #default_mail_env = default_mail_env = maildir:~/Maildir (定义邮箱的目录) [root@mail etc]# vi /etc/sysconfig/iptables
添加以下部分：
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 110 -j ACCEPT 为pop3
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 143 -j ACCEPT 为imap [root@mail etc]# /etc/rc.d/init.d/iptables restart
Flushing firewall rules: [ OK ] Setting chains to policy ACCEPT: filter [ OK ] Unloading iptables modules: [ OK ] Applying iptables firewall rules: [ OK ] [root@mail etc]# [root@mail etc]# chkconfig dovecot on [root@mail etc]# chkconfig --list dovecot dovecot 0:off 1:off 2:on 3:on 4:on 5:on 6:off [root@mail etc]# /etc/rc.d/init.d/dovecot start Starting Dovecot Imap: [ OK ] [root@mail etc]# 至此可以测试收发，邮箱服务器的基本功能已实现！ [root@mail etc]# useradd leeki.yan -s /sbin/nologin [root@mail etc]# passwd leeki.yan Changing password for user leeki.yan. New UNIX password: Retype new UNIX password: passwd: all authentication tokens updated successfully. 添加用户测试看看吧! 本文出自 “成就梦想---唯有执著努力！” 博客，谢绝转载！ 本文出自 51CTO.COM技术博客 |
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