Sendmail电子邮件系统的简单架设

Sendmail电子邮件系统的简单架设

2007-05-31 by kenthy#qingdaonews.com

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系统环境： RHEL4 [ 2.6.9-5.EL ]
主要软件版本：
 sendmail-8.13.1-2
 dovecot-0.99.11-2.EL4.1
 squirrelmail-1.4.3a-7.EL4
 m4-1.4.1-16
 bind-9.2.4-2
 httpd-2.0.52-9.ent
 php-4.3.9-3.1
MailServer：@redhat.com 172.17.17.1/24
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一、软件安装
 为简化实验过程，直接使用RHEL4光盘上自带的rpm包安装各软件程序，过程略

二、配置网络参数
 1> # vi /etc/sysconfig/network-scripts/ifcfg-eth0
  DEVICE=eth0
  ONBOOT=yes
  BOOTPROTO=static
  IPADDR=172.17.17.1
  NETMASK=255.255.255.0
  BROADCAST=172.17.17.255
 2> # vi /etc/sysconfig/network
  NETWORKING=yes
  HOSTNAME=redhat.com
 3> # vi /etc/hosts
  127.0.0.1               localhost.localdomain localhost
  172.17.17.1             redhat.com mail.redhat.com rhel.net mail.rhel.net mail
 4> # vi /etc/resolv.conf
  nameserver 172.17.17.1
  nameserver 202.106.0.20
  nameserver 202.106.46.151
 5> # service network restart

三、配置DNS服务器
 1> # vi /var/named/chroot/etc/named.conf
  options {
          directory "/var/named";
          forwarders { 202.106.0.20; 202.106.46.151; };
  };
  zone "redhat.com" IN {
          type master;
          file "redhat.com.zone";
  };
  zone "rhel.net" IN {
          type master;
           file "rhel.net.zone";
  };
  zone "17.17.172.in-addr.arpa" IN {
          type master;
          file "172.17.17.arpa";
  };
 2> # vi /var/named/chroot/var/named/redhat.com.zone      //rhel.net.zone类似
  $TTL    86400
  @ SOA   redhat.com. root.redhat.com. (
          2007053001
          3H
          15M
          1W
          1200
  )
          IN      NS      mail.redhat.com.
          IN      MX 10      mail.redhat.com.
  mail    IN      A       172.17.17.1
  www     IN      CNAME   mail
 3> # vi /var/named/chroot/var/named/172.17.17.arpa
  $TTL    86400
  @ SOA   redhat.com. root.redhat.com. (
          2007053001
          3H
          15M
          1W
          1200
  )
          IN      NS      mail.redhat.com.
          IN      MX 10      mail.redhat.com.
  1 IN PTR mail.redhat.com.
 4> # chkconfig --level 2345 named on
    # service named restart

四、配置sendmail服务器 [smtp]
 1> # useradd -M -s /dev/null tom ; passwd tom
    # useradd -M -s /dev/null jerry ; passwd jerry
    # useradd -M -s /dev/null kitty ; passwd kitty
 2> # vi /etc/mail/sendmail.mc  //为测试方便，smtp认证可不作
  DAEMON_OPTIONS(`Port=smtp,Addr=172.17.17.1, Name=MTA')dnl
  dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
  dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
    # m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
 3> # vi /etc/mail/local-host-names
  mail
  mail.redhat.com
  redhat.com
  localhost
  localhost.localdomain
 3> # vi /etc/aliases
  admin: root,jerry
    # newaliases
 4> # vi /etc/mail/access
  localhost.localdomain           RELAY
  localhost                       RELAY
  127.0.0.1                       RELAY
  172.17.17                       RELAY
  redhat.com                      RELAY
  rhel.net                 RELAY
    # cd /etc/mail ; make access.db
 5> # vi /etc/mail/sendmail.cw
  rhel.net
    # vi /etc/mail/virtusertable
    jerry
    # cd /etc/mail ; make virtusertable.db
 6> # chkconfig --level 2345 sendmail on
    # service sendmail restart

五、配置dovecot服务器 [pop3、imap]
 1> # vi /etc/dovecot.conf
  protocols = pop3 pop3s imap imaps
 2> # chkconfig --level 2345 dovecot on
    # service dovecot restart

六、配置webmail
 1> # cp -rf /usr/share/squirrelmail/ /var/www/html/
    # mv /var/www/html/squirrelmail /var/www/html/mail
    # cd /var/www/html/mail/config
    # rm -rf config.php config_local.php
    # ln -s /etc/squirrelmail/config.php ./
    # ln -s /etc/squirrelmail/config_local.php ./
 2> # vi /etc/httpd/conf/httpd.conf
  DocumentRoot "/var/www/html/mail"
  
      Options Indexes
      AllowOverride None
      Order allow,deny
      Allow from all
  
 3> # chkconfig --level 2345 httpd on
    # service httpd restart

七、测试邮件服务器
 1> 测试账户：
     
         
 2> 测试方式：
  使用Foxmail等MUA软件配置测试
  通过浏览器访问或登陆测试