Postfix+Dovecot+Saslauthd组合，系统用户和虚拟用户配置，demo下载
==============设置hostname====================
# vim /etc/hostname
mail.vip.usee88.com
vim /etc/hosts 添加
mail.vip.usee88.com
# reboot
==============安装telnet======================
yum -y install telnet
==================================================================
= 安装postfix/cyrus-sasl/dovecot =
==================================================================
======================安装postfix=================================
yum -y install postfix*
rpm -ql postfix|more
yum -y install openssl
postconf -d | grep mail_version
postconf -a
postconf -m
chkconfig --level 2345 postfix on
/etc/init.d/postfix restart
======================安装 cyrus-sasl===============================
rpm -qa | grep sasl
yum install cyrus-sasl*
vim /etc/sysconfig/saslauthd
---------------------------------------------------------
SOCKETDIR=/var/run/saslauthd
MECH=shadow
FLAGS=
---------------------------------------------------------
vim /etc/sasl2/smtpd.conf
---------------------------------------------------------
pwcheck_method: saslauthd
mech_list: plain login
log_level: 3
saslauthd_path:/var/run/saslauthd/mux
---------------------------------------------------------
chkconfig --level 2345 saslauthd on
systemctl restart saslauthd
# 测试
useradd tUuser && echo passtUuser | passwd --stdin tUuser
testsaslauthd -u tUuser -p 'passtUuser'
查看结果，是否success
//清理
userdel tUuser;
rm -rf /home/tUuser
rm -rf /var/spool/mail/tUuser
======================安装dovecot=================================
yum -y install dovecot dovecot-devel dovecot-mysql pam-devel
dovecot --version 查看版本
chkconfig --level 2345 dovecot on
systemctl restart dovecot
---------------------------------
systemctl status postfix
systemctl status saslauthd
systemctl status dovecot
==================================================================
= 配置postfix/cyrus-sasl/dovecot =
==================================================================
===================配置postfix===========================
---------------------------------------------------
1、 配置postfix--- main.cf
---------------------------------------------------
find / -name 'main.cf'
cp -p /etc/postfix/main.cf /etc/postfix/main.cf.bak
cp -p /etc/postfix/master.cf /etc/postfix/master.cf.bak
查看版本：如：postfix-2.10.1-9.el7.x86_64，
后面 /usr/share/doc/postfix-2.10.1 引用版本地址
--------------------------------------------------------
创建邮件专用账号，后面其他虚拟邮件账号收发邮件，均依赖该账号
注意：vmail, gid 5000, uid 5000
--------------------------------------------------------
groupadd -g 5000 vmail
useradd -g vmail -u 5000 -s /sbin/nologin vmail
mkdir -p /home/vmail/mail/.imap/INBOX/
chown -R vmail.vmail /home/vmail/
--------------------------------------------------------
rpm -qa | grep postfix
# vim /etc/postfix/main.cf
// /////////////////
// 详细配置 参阅 虚拟用户相关配置/postfix/main.cf
// /////////////////
---------------------------------------------------
2、 配置postfix--- master.cf
---------------------------------------------------
# vim /etc/postfix/master.cf
smtps inet n - n - - smtpd
-o smtpd_tls_wrappermode=yes
添加 如下
dovecot unix - n n - - pipe
flags=DRhu user=vmail:vmail argv=/usr/libexec/dovecot/dovecot-lda -f ${sender} -d ${recipient}
配置后，重启
/etc/init.d/postfix start
---------------------------------------------------
3、 数据库连接相关文件
---------------------------------------------------
// 安装数据库 省略
mysql -uroot -p123456q -e "create database postfix default character set utf8 collate utf8_bin;"
mysql -uroot -p123456q -e "grant all on postfix.* to 'postfix'@'%' identified by 'postfix';"
mysql -uroot -p123456q mysql -e "delete from user where user='';"
mysql -uroot -p123456q -e "flush privileges;"
mysql -upostfix -ppostfix
quit;
mkdir /etc/postfix/sql/
创建以下几个文件，内容详见 /postfix/sql/ 文件夹
vim /etc/postfix/sql/mysql_virtual_alias_maps.cf
vim /etc/postfix/sql/mysql_virtual_alias_domain_maps.cf
vim /etc/postfix/sql/mysql_virtual_alias_domain_catchall_maps.cf
vim /etc/postfix/sql/mysql_virtual_domains_maps.cf
vim /etc/postfix/sql/mysql_virtual_mailbox_maps.cf
vim /etc/postfix/sql/mysql_virtual_alias_domain_mailbox_maps.cf
vim /etc/postfix/sql/mysql_virtual_mailbox_limit_maps.cf
========================================================
==============配置dovecot======================
1、备份文件
cp -p /etc/dovecot/dovecot.conf /etc/dovecot/dovecot.conf.bak
cp -p /etc/dovecot/conf.d/10-auth.conf /etc/dovecot/conf.d/10-auth.conf.bak
cp -p /etc/dovecot/conf.d/10-mail.conf /etc/dovecot/conf.d/10-mail.conf.bak
cp -p /etc/dovecot/conf.d/10-master.conf /etc/dovecot/conf.d/10-master.conf.bak
cp -p /etc/dovecot/conf.d/10-ssl.conf /etc/dovecot/conf.d/10-ssl.conf.bak
cp -p /etc/dovecot/conf.d/10-logging.conf /etc/dovecot/conf.d/10-logging.conf.bak
cp -p /etc/dovecot/conf.d/15-lda.conf /etc/dovecot/conf.d/15-lda.conf.bak
2、 配置Dovecot--- dovecot.conf
vim /etc/dovecot/dovecot.conf
#如果不使用IPv6，请修改为
protocols = imap pop lmtp
listen = *
!include conf.d/*.conf
# 添加
passdb {
driver = sql
args = /etc/dovecot/dovecot-sql.conf.ext
}
userdb {
driver = static
args = uid=5000 gid=5000 home=/home/vmail/%d/%n
}
# 添加 调试日志
auth_debug_passwords=yes
mail_debug=yes
auth_verbose=yes
auth_verbose_passwords=plain
3、 配置Dovecot--- 10-auth.conf
vim /etc/dovecot/conf.d/10-auth.conf
# 明文授权
disable_plaintext_auth = no
auth_mechanisms = plain login cram-md5
!include auth-system.conf.ext
4、 启用ssl认证 (启用ssl：nginx-key即可)
vim /etc/dovecot/conf.d/10-ssl.conf
ssl = yes
ssl_cert = ssl_key =
5、 配置Dovecot--- 10-mail.conf
vim /etc/dovecot/conf.d/10-mail.conf
mail_location = maildir:/home/vmail/%d/%n/Maildir
first_valid_uid = 5000
first_valid_gid = 5000
mbox_write_locks = fcntl
6、启用dovecot的日志，如下：（注意这两个文件权限，设置777）
vim /etc/dovecot/conf.d/10-logging.conf
info_log_path = /var/log/dovecot_info.log
debug_log_path = /var/log/dovecot_dubug.log
7、 配置Dovecot--- 10-master.conf
vi /etc/dovecot/conf.d/10-master.conf
service imap-login {
inet_listener imap {
port = 143
}
}
service pop3-login {
inet_listener pop3 {
port = 110
}
}
service auth {
unix_listener auth-userdb {
mode = 0600
user = vmail
group = vmail
}
# Postfix smtp-auth
unix_listener /var/spool/postfix/private/auth {
mode = 0666
user = postfix
}
}
8、修改15-lda.conf文件
vim /etc/dovecot/conf.d/15-lda.conf
postmaster_address = postmaster@vip.usee88.com
9、添加dovecot-sql.conf.ext文件
vim /etc/dovecot/dovecot-sql.conf.ext
driver = mysql
connect = host=localhost dbname=postfix user=postfix password=postfix
default_pass_scheme = MD5-CRYPT
password_query = SELECT username AS user,password FROM mailbox WHERE username = '%u' AND active='1'
user_query = SELECT maildir, 5000 AS uid, 5000 AS gid, CONCAT('dict:storage=',floor(quota/1000),'proxy::quota') as quota FROM mailbox WHERE username = '%u' AND active='1'
# 然后启动服务
/etc/init.d/postfix restart
systemctl restart dovecot
10、调试
清空日志
echo ''>/var/log/maillog
tail -fn 20 /var/log/maillog
查看日志显示
另一个窗口逐句执行
systemctl restart saslauthd
systemctl restart dovecot
systemctl restart postfix
systemctl status saslauthd
systemctl status dovecot
systemctl status postfix
==================================================================
= postfixadmin配置 =
==================================================================
配置postfixadmi
vim path/to/postfixadmin/config.inc.php
$CONF['configured'] = true;
$CONF['default_language'] = 'cn';
$CONF['database_type'] = 'mysql';
$CONF['database_host'] = 'localhost';
$CONF['database_user'] = 'postfix';
$CONF['database_password'] = 'postfix';
$CONF['database_name'] = 'postfix';
$CONF['encrypt'] = 'dovecot:CRAM-MD5';
$CONF['dovecotpw'] = "/usr/bin/doveadm pw";
$CONF['default_aliases'] = array (
'abuse' => 'abuse@vip.usee88.com',
'hostmaster' => 'hostmaster@vip.usee88.com',
'postmaster' => 'postmaster@vip.usee88.com',
'webmaster' => 'webmaster@vip.usee88.com'
);
$CONF['footer_text'] = 'mail.usee88.com';
$CONF['footer_link'] = 'http://mail.vip.usee88.com';
$CONF['aliases'] = '1000';
$CONF['mailboxes'] = '1000';
$CONF['maxquota'] = '1000000';
$CONF['domain_quota_default'] = '1000000';
$CONF['quota'] = 'YES';
$CONF['domain_path'] = 'YES';
$CONF['domain_in_mailbox'] = 'NO';
$CONF['used_quotas'] = 'YES';
$CONF['fetchmail'] = 'YES';
$CONF['new_quota_table'] = 'YES';
修改 change-this-to-your.domain.tld => vip.usee88.com
修改 Return to change-this-to-your.domain.tld => vip.usee88.com
修改 $CONF['password_validation'] 项
'/([a-zA-Z].*){3}/' => 'password_no_characters 3',
改为
'/([a-zA-Z].*){1}/' => 'password_no_characters 1',
// 建立默认站点
==============其他相关命令======================
邮件客户端出现错误：-ERR [SYS/PERM] Permission denied
1、目录权限
chmod 0600 /var/spool/mail/*
2、用户账号密码是否错误
vim /etc/passwd
# 创建用户
useradd user_demo
#设置密码，会要求输入两次密码
passwd user_demo
cd /etc/postfix
useradd c1688; echo 123456q | passwd -- stdin c1688;
mkdir -p /home/c1688/mail/.imap/INBOX/
chown -R c1688.c1688 /home/c1688/
配置相关文件
3、查看端口是否启用
reboot
netstat -ntl // 核对 465 993，25端口是否启用
==============域名相关配置======================
主域名：demo.com
检验地址
https://www.kitterman.com/spf/validate.html
-------------一级域名发送邮件-------------------
pop3: mail.demo.com
smtp: mail.demo.com
email: test@demo.com
添加A、MX、TXT记录
记录值 记录类型 记录值
mail A mailServerIP
@ MX mail.demo.com
@ TXT v=spf1 ip4:mailServerIP a mx -all
_dmarc TXT v=DMARC1;p=quarantine;rua=mailto:admin@demo.com
-------------二级域名发送邮件-------------------
pop3: mail.vip.usee88.com
smtp: mail.vip.usee88.com
email: test@vip.usee88.com
添加A、MX、TXT记录
记录值 记录类型 记录值
mail.vip A mailServerIP
vip MX mail.vip.usee88.com
vip TXT v=spf1 ip4:mailServerIP a mx -all
_dmarc TXT v=DMARC1;p=quarantine;rua=mailto:admin@vip.usee88.com