添加主机：CentOS下搭建Sendmail邮件主机步骤详解

yum -y install sendmail-* #主程序
yum -y install m4-*　　　　#配置工具
yum -y install cyrus-sasl　#SMTP认证
yum -y install dovecot  # POP IMAP 接收

m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
makemap hash /etc/mail/access.db < /etc/mail/access

 services sendmail start  
 services dovecot start
services saslauthd start

groupadd mail_user #添加一个邮件组
useradd -s /sbin/nologin -g mail_user zhang3  # 添加一个名为张3的用户
useradd -s /sbin/nologin -g mail_user li4 # 添加一个名为l4的用户
echo Test_zhang3 | passwd --stdin zhang3 # 为张3设置密码为Test_zhang3
echo Test_li4 | passwd --stdin li4 # 为张3设置密码为Test_li4

yum -y install lftp
lftpget http://openwebmail.org/openwebmail/download/redhat/rpm/release/openwebmail.repo 
 yum -y install openwebmail 

dbm_ext   .db
dbmopen_ext  .dbm
dbmopen_haslock no

domainnames qiu.com  #更改为自己定义的域名#
default_language zh_CN.GB2312    #更改登陆界面为中文#

smtpserver 192.168.0.107 #更改smtp主机的地址#
authpop3_server 192.168.0.107 #更改pop3主机的地址#

dbmopen_ext .db
dbmopen_haslock yes

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*