CentOS 快速搭建邮件服务
cyrus-sasl 账户认证(本地)
postfix 发送邮件
dovecot 接受邮件
一、系统配置
所有账户邮件存放在 系统 /data/%U 目录下
修改用户模板，新添加用户自动创建 Mail 目录用于存放邮件文件
域：mxt.selboo.com.cn MX记录 mail.mxt.selboo.com.cn
用户模板下建立用户邮箱目录
[codes=txt][root@selboo ~]# mkdir /etc/skel/Mail
[root@selboo ~]# chmod 700 /etc/skel/Mail[/codes]
创建 "m1" 邮件账号
[codes=txt][root@selboo ~]# useradd -s /sbin/nologin -d /data/m1 m1[/codes]
修改 "m1" 密码 为 '12345567'
[codes=txt][root@selboo ~]# echo '12345567' | passwd --stdin m1
Changing password for user m1.
passwd: all authentication tokens updated successfully.[/codes]
安装软件
[codes=txt][root@selboo ~]# yum install postfix cyrus-sasl* dovecot[/codes]
二、cyrus-sasl 配置
1、修改 /etc/sysconfig/saslauthd 文件 使用本地认证
[codes=txt]cat /etc/sysconfig/saslauthd | grep -v '^#'
SOCKETDIR=/var/run/saslauthd
MECH=shadow[/codes]
2、修改 smtpd.conf
[codes=txt][root@selboo ~]# cat /etc/sasl2/smtpd.conf
pwcheck_method: saslauthd
mech_list: plain login[/codes]
3、验证 sasl 是否正常
[codes=txt][root@selboo ~]# testsaslauthd -u m1 -p 12345567
0: OK "Success."[/codes]
三、Postfix配置
main.cf 配置文件
[codes=txt]cat /etc/postfix/main.cf | grep -v '^#'
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
myhostname = mail.mxt.selboo.com.cn
mydomain = mxt.selboo.com.cn
myorigin = $myhostname
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, mail.$mydomain, www.$mydomain, ftp.$mydomain
unknown_local_recipient_reject_code = 550
mynetworks_style = subnet
mynetworks = 127.0.0.1
relay_domains = $mydestination
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
home_mailbox = Mail/
debug_peer_level = 2
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.6.6/samples
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
# sasl 认证
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,reject_unauth_destination,permit_mynetworks
smtpd_client_restrictions = permit_sasl_authenticated[/codes]
四、dovecot 配置
1、修改 /etc/dovecot/dovecot.conf 文件
[codes=txt][root@selboo ~]# cat /etc/dovecot/dovecot.conf | grep -E "protocols|listen ="
protocols = pop3
listen = *[/codes]只启用 POP3 和 只监听 IPV4 地址
2、关闭 POP3S 协议
[codes=txt][root@selboo ~]# cat /etc/dovecot/conf.d/10-ssl.conf | grep "ssl ="
ssl = no[/codes]
3、指定邮件目录
[codes=txt][root@selboo ~]# cat 10-mail.conf | grep "mail_location = maildir"
mail_location = maildir:~/Mail[/codes]
4、修改auto文件
[codes=txt][root@selboo ~]# cat 10-auth.conf | grep disable_plaintext_auth
disable_plaintext_auth = no[/codes]否在在收信时会出错 错误一
五、错误记录
1、错误一
/var/log/maillog 文件
dovecot: pop3-login: Disconnected (tried to use disabled plaintext auth)
2、错误二
/var/log/maillog 文件
Initialization failed: mail_location not set and autodetection failed: Mail storage autodetection fa
解决二
/etc/dovecot/conf.d/10-mail.conf
mail_location = maildir:~/Mail
参考文章：
http://book.selboo.com.cn/mail/postfix_smtp.html
http://book.selboo.com.cn/mail/dovecot_pop3.html
postfix 错误汇总
postfix 发送邮件
dovecot 接受邮件
一、系统配置
所有账户邮件存放在 系统 /data/%U 目录下
修改用户模板，新添加用户自动创建 Mail 目录用于存放邮件文件
域：mxt.selboo.com.cn MX记录 mail.mxt.selboo.com.cn
用户模板下建立用户邮箱目录
[codes=txt][root@selboo ~]# mkdir /etc/skel/Mail
[root@selboo ~]# chmod 700 /etc/skel/Mail[/codes]
创建 "m1" 邮件账号
[codes=txt][root@selboo ~]# useradd -s /sbin/nologin -d /data/m1 m1[/codes]
修改 "m1" 密码 为 '12345567'
[codes=txt][root@selboo ~]# echo '12345567' | passwd --stdin m1
Changing password for user m1.
passwd: all authentication tokens updated successfully.[/codes]
安装软件
[codes=txt][root@selboo ~]# yum install postfix cyrus-sasl* dovecot[/codes]
二、cyrus-sasl 配置
1、修改 /etc/sysconfig/saslauthd 文件 使用本地认证
[codes=txt]cat /etc/sysconfig/saslauthd | grep -v '^#'
SOCKETDIR=/var/run/saslauthd
MECH=shadow[/codes]
2、修改 smtpd.conf
[codes=txt][root@selboo ~]# cat /etc/sasl2/smtpd.conf
pwcheck_method: saslauthd
mech_list: plain login[/codes]
3、验证 sasl 是否正常
[codes=txt][root@selboo ~]# testsaslauthd -u m1 -p 12345567
0: OK "Success."[/codes]
三、Postfix配置
main.cf 配置文件
[codes=txt]cat /etc/postfix/main.cf | grep -v '^#'
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
myhostname = mail.mxt.selboo.com.cn
mydomain = mxt.selboo.com.cn
myorigin = $myhostname
inet_interfaces = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, mail.$mydomain, www.$mydomain, ftp.$mydomain
unknown_local_recipient_reject_code = 550
mynetworks_style = subnet
mynetworks = 127.0.0.1
relay_domains = $mydestination
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
home_mailbox = Mail/
debug_peer_level = 2
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.6.6/samples
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
# sasl 认证
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,reject_unauth_destination,permit_mynetworks
smtpd_client_restrictions = permit_sasl_authenticated[/codes]
四、dovecot 配置
1、修改 /etc/dovecot/dovecot.conf 文件
[codes=txt][root@selboo ~]# cat /etc/dovecot/dovecot.conf | grep -E "protocols|listen ="
protocols = pop3
listen = *[/codes]只启用 POP3 和 只监听 IPV4 地址
2、关闭 POP3S 协议
[codes=txt][root@selboo ~]# cat /etc/dovecot/conf.d/10-ssl.conf | grep "ssl ="
ssl = no[/codes]
3、指定邮件目录
[codes=txt][root@selboo ~]# cat 10-mail.conf | grep "mail_location = maildir"
mail_location = maildir:~/Mail[/codes]
4、修改auto文件
[codes=txt][root@selboo ~]# cat 10-auth.conf | grep disable_plaintext_auth
disable_plaintext_auth = no[/codes]否在在收信时会出错 错误一
五、错误记录
1、错误一
/var/log/maillog 文件
dovecot: pop3-login: Disconnected (tried to use disabled plaintext auth)
2、错误二
/var/log/maillog 文件
Initialization failed: mail_location not set and autodetection failed: Mail storage autodetection fa
解决二
/etc/dovecot/conf.d/10-mail.conf
mail_location = maildir:~/Mail
参考文章：
http://book.selboo.com.cn/mail/postfix_smtp.html
http://book.selboo.com.cn/mail/dovecot_pop3.html
postfix 错误汇总