CentOS authlib軟件已被廣泛應用但是也在不斷的更新，這里介紹CentOS authlib軟件安裝設置使用，幫助大家安裝更新CentOS authlib軟件系統。下面介紹使用rpm安裝CentOS authlib軟件步驟操作。

A、CentOS authlib軟件安裝依懶的包
[root@localhost ~]# yum -y install postgresql-devel expect libtool-ltdl-devel
[root@localhost ~]# wget http://prdownloads.sourceforge.net/courier/courier-authlib-0.61.0.tar.bz2
[root@localhost ~]# tar xjf courier-authlib-0.61.0.tar.bz2
[root@localhost ~]# cd courier-authlib-0.61.0
[root@localhost courier-authlib-0.61.0]# cp courier-authlib.spec $SPEC
[root@localhost courier-authlib-0.61.0]# cd ..
[root@localhost ~]# cp courier-authlib-0.61.0.tar.bz2 $SOURCE
[root@localhost ~]# cd $SPEC
[root@localhost SPECS]# rpmbuild -bb courier-authlib.spec （創建rpm文件）

B、安裝生成的rpm
[root@localhost SPECS]# cd $RPMS/i386
[root@localhost i386]# rpm -ivh courier-authlib-0.61.0-1.i386.rpm
[root@localhost i386]# rpm -ivh courier-authlib-devel-0.61.0-1.i386.rpm
[root@localhost i386]# rpm -ivh courier-authlib-mysql-0.61.0-1.i386.rpm

C、CentOS authlib軟件配置daemon
[root@localhost i386]# cd /etc/authlib/
[root@localhost authlib]# mv authdaemonrc authdaemonrc.bak
[root@localhost authlib]# vim authdaemonrc
輸入下面的內容：
authmodulelist="authmysql"
authmodulelistorig="authmysql"
daemons=10
authdaemonvar=/var/spool/authdaemon
DEBUG_LOGIN=2
DEFAULTOPTIONS="wbnodsn=1"
LOGGEROPTS=""

D、CentOS authlib軟件配置authmysqlrc
[root@localhost authlib]# mv authmysqlrc authmysqlrc.bak
[root@localhost authlib]# vim authmysqlrc
輸入下面的內容：
MYSQL_SERVER    localhost
MYSQL_USERNAME  extmail
MYSQL_PASSWORD  extmail
MYSQL_PORT      0
MYSQL_SOCKET    /var/lib/mysql/mysql.sock
MYSQL_OPT       0
MYSQL_DATABASE  extmail
MYSQL_SELECT_CLAUSE     SELECT username,password,"",uidnumber,gidnumber,
CONCAT('/home/data/domains/',homedir),   
CONCAT('/home/data/domains/',maildir),   
quota,       
name                   
FROM mailbox       
WHERE username = '$(local_part)@$(domain)'

E、啟動CentOS authlib軟件
[root@localhost ~]# service courier-authlib start
Starting Courier authentication services: authdaemond
[root@localhost ~]# chmod 777 /var/spool/authdaemon
以上講解手動使用rpm系統安裝CentOS authlib軟件。

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