Thanks you all for your helps. Finally I have updated to 8.3.7 version and and able to get it worked with openldap with the following directives as you suggested: host all all 202.18.10.0/24 ldap ldap://202.18.10.1:389/ou=People,dc=example,dc=com;uid=;,ou=People,dc=example,dc=com" -- View this message in context: http://www.nabble.com/pgSql-authentication-problem-with-openLdap-tp23021809p23077697.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general