Integrate openldap with postfix

I had configured postfix for my mail server which is working fine.

I had configured openldap on the same server and added many entries in that.

It is also working fine.when i use ldapsearch i can able to view the entries etc.

The users which i had created in ldap is already there in OS for postfix.

I had integrated openldap with postfix, to fetch the mail infromation from openldap.

like mailid,mailQuota,mailbox location etc.

But when i send mail to user it is fetching from openldap at all.

It is strainght away delivering to mailbox.plz help me with this issue

This is my main.cf file parameters.

[root@master ~]# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases, ldap:aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
html_directory = no
inet_interfaces = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mydomain = panafnet.com
myhostname = master.panafnet.com
mynetworks = 192.168.117.0/24, 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
relay_domains = $mydestination
relayhost = $mydomain
sample_directory = /usr/share/doc/postfix-2.3.3/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
unknown_local_recipient_reject_code = 550

aliases_server_host = localhost
aliases_server_port = 389
aliases_search_base = dc=panafnet,dc=com
aliases_scope = sub
aliases_bind = no
aliases_query_filter = (&(objectClass=qmailUser)(mail=%s))
aliases_result_attribute = mailMessageStore
aliases_timeout = 10
aliases_version = 3