CentOS+postfix+ExtMail+amavisd-new+Spam_Locker+DSpam配置指南：三、配置MTA-Postfix

 1、安装postfix

安装postfix

 

shell
# yum install postfix
# rpm -e sendmail

2、配置postfix

shell
# postconf -n > /etc/postfix/main2.cf
# mv /etc/postfix/main.cf /etc/postfix/main.cf.old
# mv /etc/postfix/main2.cf /etc/postfix/main.cf

编辑main.cf：

shell
# vi /etc/postfix/main.cf

增加如下内容：

 

# hostname
mynetworks = 127.0.0.1
myhostname = mail.extmail.org
mydestination = $mynetworks $myhostname

# banner
mail_name = Postfix - by extmail.org
smtpd_banner = $myhostname ESMTP $mail_name

# response immediately
smtpd_error_sleep_time = 0s

# Message and return code control
message_size_limit = 5242880
mailbox_size_limit = 5242880
show_user_unknown_table_name = no

# Queue lifetime control
bounce_queue_lifetime = 1d
maximal_queue_lifetime = 1d

设置postfix开机自启：

 

shell
# chkconfig postfix on