title: ORACLE APEX : Authentication against LDAP Distribution List
body: <p>I want to authenticate Oracle APEX user against LDAP, but only if he/she belongs to a particular distribution list.</p>
  
  <p>Example : assume I have distribution list 'ADMIN_GRP', the APEX application should allow access to user only if he/she is member of 'ADMIN_GRP'.</p>
  
  <p>Any clues ?</p>