Postfix(二):为邮件服务器配置收件服务器----dovecot

上一篇文章我们搭建了postfix搭建了SMTP服务器(MTA),SMTP邮件服务器已经ok,但是光发送邮件还满足不了我们的邮件服务器的需求,我们还需要一个能够接受邮件的POP3/IMAP服务器(MUA)

我们使用dovecot构建我们的收件服务器

依赖

 

# yum -y install pam-devel

 

 

下载

 

# wget http://www.dovecot.org/releases/2.0/dovecot-2.0.13.tar.gz

 

安装

 

# useradd -M -s /sbin/nologin dovecot # 创建dovecot的运行账户
# useradd –M –s /sbin/nologin dovenull
# tar zxvf dovecot-2.0.13.tar.gz
# cd dovecot-2.0.13.tar.gz
# ./configure --sysconfdir=/etc --with-mysql –with-pam
# make && make install
# cd doc
# mkdir /etc/ssl/certs –p
# mkdir -p /etc/ssl/private
# sh mkcert.sh

 

 

配置

 

# cp /usr/local/share/doc/dovecot/example-config/dovecot.conf /etc/dovecot/ # 建立dovecot配置文件
# cp -r /usr/local/share/doc/dovecot/example-config/conf.d /etc/dovecot/ # 建立dovecot配置文件的需求文件
# vi /etc/dovecot/dovecot.conf
20 protocols = imap pop3 lmtp # 支持邮局协议
# vi /etc/dovecot/conf.d/10-auth.conf
9 disable_plaintext_auth =  no#允许明文密码验证
# vi /etc/dovecot/conf.d/10-ssl.conf
6 ssl = no # 禁用s
# vi /etc/dovecot/conf.d/10-mail.conf
24 mail_location = maildir:~/Maildir # 邮件存储格式及位置

//  创建PAM认证文件
# vi /etc/pam.d/dovecot


auth    required    pam_nologin.so
auth    include       system-auth
account include   system-auth
sesssion include   system-auth


# dovecot   # 启动服务

 

 

 

测试:

# telnet localhost 110

出现+Ok Dovecot ready.则正确

 

还记得我们上一篇发的一个测试邮件吧… 这里我们就收到了

 

当遇到    -ERR Authentication failed.这个错误时请查看密码是否正确

修改密码 passwd username   (linux 命令  usermod 不太好用)

当遇到问题首先要查看之前的postfix和dovecot配置是否正确请仔细检查一一对比

错误总结

1、

错误:

dovecot 启动时 显示 ssl_cert_file:Can't use /etc/ssl/certs/dovecot.pem

解决

// 创建两个文件夹

mkdir –p /etc/ssl/certs/

mkdir –p /etc/ssl/private

进入到源码包解压目录

cd doc

sh mkcert.sh

错误:

telnet 110端口的时候停在Escape character is ‘^]’.

不出现+Ok Dovecot ready.

日志信息:

Aug  4 16:52:35 localhost dovecot: auth: Fatal: Support not compiled in for passdb driver 'pam' 
Aug  4 16:52:35 localhost dovecot: master: Error: service(auth): command startup failed, throttling 
Aug  4 16:53:17 localhost dovecot: master: Warning: Killed with signal 15 (by pid=17402 uid=0 code=kill) 
Aug  4 16:53:18 localhost dovecot: pop3-login: Error: auth: connect(login) failed: Connection refused 
Aug  4 16:53:54 localhost dovecot: pop3-login: Disconnected: Shutting down (no auth attempts): rip=127.0.0.1, lip=127.0.0.1, secured

 

解决:

预编译时加入参数 –with-pam

yum –y install pam-devel

./configure –sysconfdir=/etc –with-pam –with-mysql

make && make install

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