Hi there, Can someone tell me, please, if it's possible with Exchange 2003 to add an addressbook which references an external LDAP directory? Thanks, - Alan.

Please have a look of this thread for more info: http://social.technet.microsoft.com/Forums/en-US/exchangesvrdevelopment/thread/23a8fb78-3703-4050-8447-d640ef9b2f50 Anil

Thanks but I don't wan to create Contacts, I wanted to know if LDAP chaining was possible.

have you taken look at below one? http://www.servernewsgroups.net/activedirectory/t13414-how-configure-ldap-directory-external-access.aspxVinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|

Thanks but I don't want Outlook itself to search other LDAP directories. I want Exchange, not Outlook, to display the entries in another LADP directory when a user selects a certain addressbook in Outlook. I want to mange it centrally not on a few thousand clients. I guess that Exchange/AD just can't do that.

Hi, Is the external LDAP directory pertained to the same organization as Exchange 2003? If not, that's impossible. AllenAllen Song