courer+postfix问题 Authentication FAILED: Input/output error

daitaohong

运行./authtest  -s  login  postmaster@extmail.org  extmail
提示Authentication FAILED: Input/output error错误
在日志中提示
Jul 24 00:59:52 localhost authdaemond: modules="authmysql", daemons=5
Jul 24 00:59:52 localhost authdaemond: Installing libauthmysql
Jul 24 00:59:52 localhost authdaemond: Installation complete: authmysql
网上找了半天没有关于这个的请各位高手看看

authdaemonrc内容为
authmodulelist="authmysql"

##NAME: authmodulelistorig:3
#
# This setting is used by Courier's webadmin module, and should be left
# alone

authmodulelistorig="authmysql"
authmysqlrc内容为
MYSQL_SERVER            localhost
MYSQL_USERNAME          extmail
MYSQL_PASSWORD          extmail
MYSQL_SOCKET               /tmp/mysql.sock
MYSQL_DATABASE          extmail
MYSQL_HOME_FIELD  concat('/mailbox/',homedir)
……
MYSQL_MAILDIR_FIELD  concat('/mailbox/',maildir)
中间都是用tab隔开的