五.配置courier-authlib

1、安装Courier-Authlib
安装以下软件包:
shell
# yum install courier-authlib
# yum install courier-authlib-mysql
编辑/etc/authlib/authmysqlrc文件:
shell
# vi /etc/authlib/authmysqlrc
并将其内容清空，然后增加如下内容:

MYSQL_SERVER            localhost
MYSQL_USERNAME          extmail
MYSQL_PASSWORD          extmail
MYSQL_SOCKET            /var/lib/mysql/mysql.sock
MYSQL_PORT              3306
MYSQL_OPT               0
MYSQL_DATABASE          extmail
MYSQL_USER_TABLE        mailbox
MYSQL_CRYPT_PWFIELD     password
MYSQL_UID_FIELD         uidnumber
MYSQL_GID_FIELD         gidnumber
MYSQL_LOGIN_FIELD       username
MYSQL_HOME_FIELD        homedir
MYSQL_NAME_FIELD name
MYSQL_MAILDIR_FIELD     maildir
MYSQL_QUOTA_FIELD       quota
MYSQL_SELECT_CLAUSE     SELECT username,password,"",uidnumber,gidnumber,\
                        CONCAT('/home/domains/',homedir), \
                        CONCAT('/home/domains/',maildir), \
                        quota, \
                        name \
                        FROM mailbox                                    \
                        WHERE username = '$(local_part)@$(domain)'

修改authdaemonrc文件


shell
# vi /etc/authlib/authdaemonrc
修改如下内容:

authmodulelist="authmysql"
authmodulelistorig="authmysql"

authmodulelist="authmysql"
authmodulelistorig="authmysql"

2、启动courier-authlib：

shell
# service courier-authlib start
如一切正常，命令行将返回如下信息：
Starting Courier authentication services: authdaemond 
修改authdaemon socket目录权限
如果该目录权限不正确修改，maildrop及postfix等将无法正确获取用户的信息及密码认证：
shell
# chmod 755 /var/spool/authdaemon/